public class JTable extends JComponent implements TableModelListener, Scrollable, TableColumnModelListener, ListSelectionListener, CellEditorListener, Accessible, RowSorterListener
JTable
is used to display and edit regular two-dimensional tables
of cells.
See How to Use Tables
in The Java Tutorial
for task-oriented documentation and examples of using JTable
.
The JTable
has many
facilities that make it possible to customize its rendering and editing
but provides defaults for these features so that simple tables can be
set up easily. For example, to set up a table with 10 rows and 10
columns of numbers:
TableModel dataModel = new AbstractTableModel() { public int getColumnCount() { return 10; } public int getRowCount() { return 10;} public Object getValueAt(int row, int col) { return new Integer(row*col); } }; JTable table = new JTable(dataModel); JScrollPane scrollpane = new JScrollPane(table);
JTable
s are typically placed inside of a JScrollPane
. By
default, a JTable
will adjust its width such that
a horizontal scrollbar is unnecessary. To allow for a horizontal scrollbar,
invoke setAutoResizeMode(int)
with AUTO_RESIZE_OFF
.
Note that if you wish to use a JTable
in a standalone
view (outside of a JScrollPane
) and want the header
displayed, you can get it using getTableHeader()
and
display it separately.
To enable sorting and filtering of rows, use a
RowSorter
.
You can set up a row sorter in either of two ways:
RowSorter
. For example:
table.setRowSorter(new TableRowSorter(model))
.
autoCreateRowSorter
property to true
, so that the JTable
creates a RowSorter
for
you. For example: setAutoCreateRowSorter(true)
.
When designing applications that use the JTable
it is worth paying
close attention to the data structures that will represent the table's data.
The DefaultTableModel
is a model implementation that
uses a Vector
of Vector
s of Object
s to
store the cell values. As well as copying the data from an
application into the DefaultTableModel
,
it is also possible to wrap the data in the methods of the
TableModel
interface so that the data can be passed to the
JTable
directly, as in the example above. This often results
in more efficient applications because the model is free to choose the
internal representation that best suits the data.
A good rule of thumb for deciding whether to use the AbstractTableModel
or the DefaultTableModel
is to use the AbstractTableModel
as the base class for creating subclasses and the DefaultTableModel
when subclassing is not required.
The "TableExample" directory in the demo area of the source distribution
gives a number of complete examples of JTable
usage,
covering how the JTable
can be used to provide an
editable view of data taken from a database and how to modify
the columns in the display to use specialized renderers and editors.
The JTable
uses integers exclusively to refer to both the rows and the columns
of the model that it displays. The JTable
simply takes a tabular range of cells
and uses getValueAt(int, int)
to retrieve the
values from the model during painting. It is important to remember that
the column and row indexes returned by various JTable
methods
are in terms of the JTable
(the view) and are not
necessarily the same indexes used by the model.
By default, columns may be rearranged in the JTable
so that the
view's columns appear in a different order to the columns in the model.
This does not affect the implementation of the model at all: when the
columns are reordered, the JTable
maintains the new order of the columns
internally and converts its column indices before querying the model.
So, when writing a TableModel
, it is not necessary to listen for column
reordering events as the model will be queried in its own coordinate
system regardless of what is happening in the view.
In the examples area there is a demonstration of a sorting algorithm making
use of exactly this technique to interpose yet another coordinate system
where the order of the rows is changed, rather than the order of the columns.
Similarly when using the sorting and filtering functionality
provided by RowSorter
the underlying
TableModel
does not need to know how to do sorting,
rather RowSorter
will handle it. Coordinate
conversions will be necessary when using the row based methods of
JTable
with the underlying TableModel
.
All of JTable
s row based methods are in terms of the
RowSorter
, which is not necessarily the same as that
of the underlying TableModel
. For example, the
selection is always in terms of JTable
so that when
using RowSorter
you will need to convert using
convertRowIndexToView
or
convertRowIndexToModel
. The following shows how to
convert coordinates from JTable
to that of the
underlying model:
int[] selection = table.getSelectedRows(); for (int i = 0; i < selection.length; i++) { selection[i] = table.convertRowIndexToModel(selection[i]); } // selection is now in terms of the underlying TableModel
By default if sorting is enabled JTable
will persist the
selection and variable row heights in terms of the model on
sorting. For example if row 0, in terms of the underlying model,
is currently selected, after the sort row 0, in terms of the
underlying model will be selected. Visually the selection may
change, but in terms of the underlying model it will remain the
same. The one exception to that is if the model index is no longer
visible or was removed. For example, if row 0 in terms of model
was filtered out the selection will be empty after the sort.
J2SE 5 adds methods to JTable
to provide convenient access to some
common printing needs. Simple new print()
methods allow for quick
and easy addition of printing support to your application. In addition, a new
getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
method is available for more advanced printing needs.
As for all JComponent
classes, you can use
InputMap
and ActionMap
to associate an
Action
object with a KeyStroke
and execute the
action under specified conditions.
Warning: Swing is not thread safe. For more information see Swing's Threading Policy.
Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeansTM
has been added to the java.beans
package.
Please see XMLEncoder
.
DefaultTableModel
,
TableRowSorter
Modifier and Type | Class and Description |
---|---|
protected class |
JTable.AccessibleJTable
This class implements accessibility support for the
JTable class. |
static class |
JTable.DropLocation
A subclass of
TransferHandler.DropLocation representing
a drop location for a JTable . |
static class |
JTable.PrintMode
Printing modes, used in printing
JTable s. |
JComponent.AccessibleJComponent
Container.AccessibleAWTContainer
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
Modifier and Type | Field and Description |
---|---|
static int |
AUTO_RESIZE_ALL_COLUMNS
During all resize operations, proportionately resize all columns.
|
static int |
AUTO_RESIZE_LAST_COLUMN
During all resize operations, apply adjustments to the last column only.
|
static int |
AUTO_RESIZE_NEXT_COLUMN
When a column is adjusted in the UI, adjust the next column the opposite way.
|
static int |
AUTO_RESIZE_OFF
Do not adjust column widths automatically; use a horizontal scrollbar instead.
|
static int |
AUTO_RESIZE_SUBSEQUENT_COLUMNS
During UI adjustment, change subsequent columns to preserve the total width;
this is the default behavior.
|
protected boolean |
autoCreateColumnsFromModel
The table will query the
TableModel to build the default
set of columns if this is true. |
protected int |
autoResizeMode
Determines if the table automatically resizes the
width of the table's columns to take up the entire width of the
table, and how it does the resizing.
|
protected TableCellEditor |
cellEditor
The active cell editor object, that overwrites the screen real estate
occupied by the current cell and allows the user to change its contents.
|
protected boolean |
cellSelectionEnabled
Obsolete as of Java 2 platform v1.3.
|
protected TableColumnModel |
columnModel
The
TableColumnModel of the table. |
protected TableModel |
dataModel
The
TableModel of the table. |
protected Hashtable |
defaultEditorsByColumnClass
A table of objects that display and edit the contents of a cell,
indexed by class as declared in
getColumnClass
in the TableModel interface. |
protected Hashtable |
defaultRenderersByColumnClass
A table of objects that display the contents of a cell,
indexed by class as declared in
getColumnClass
in the TableModel interface. |
protected int |
editingColumn
Identifies the column of the cell being edited.
|
protected int |
editingRow
Identifies the row of the cell being edited.
|
protected Component |
editorComp
If editing, the
Component that is handling the editing. |
protected Color |
gridColor
The color of the grid.
|
protected Dimension |
preferredViewportSize
Used by the
Scrollable interface to determine the initial visible area. |
protected int |
rowHeight
The height in pixels of each row in the table.
|
protected int |
rowMargin
The height in pixels of the margin between the cells in each row.
|
protected boolean |
rowSelectionAllowed
True if row selection is allowed in this table.
|
protected Color |
selectionBackground
The background color of selected cells.
|
protected Color |
selectionForeground
The foreground color of selected cells.
|
protected ListSelectionModel |
selectionModel
The
ListSelectionModel of the table, used to keep track of row selections. |
protected boolean |
showHorizontalLines
The table draws horizontal lines between cells if
showHorizontalLines is true. |
protected boolean |
showVerticalLines
The table draws vertical lines between cells if
showVerticalLines is true. |
protected JTableHeader |
tableHeader
The
TableHeader working with the table. |
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
Constructor and Description |
---|
JTable()
Constructs a default
JTable that is initialized with a default
data model, a default column model, and a default selection
model. |
JTable(int numRows,
int numColumns)
Constructs a
JTable with numRows
and numColumns of empty cells using
DefaultTableModel . |
JTable(Object[][] rowData,
Object[] columnNames)
Constructs a
JTable to display the values in the two dimensional array,
rowData , with column names, columnNames . |
JTable(TableModel dm)
Constructs a
JTable that is initialized with
dm as the data model, a default column model,
and a default selection model. |
JTable(TableModel dm,
TableColumnModel cm)
Constructs a
JTable that is initialized with
dm as the data model, cm
as the column model, and a default selection model. |
JTable(TableModel dm,
TableColumnModel cm,
ListSelectionModel sm)
Constructs a
JTable that is initialized with
dm as the data model, cm as the
column model, and sm as the selection model. |
JTable(Vector rowData,
Vector columnNames)
Constructs a
JTable to display the values in the
Vector of Vectors , rowData ,
with column names, columnNames . |
Modifier and Type | Method and Description |
---|---|
void |
addColumn(TableColumn aColumn)
Appends
aColumn to the end of the array of columns held by
this JTable 's column model. |
void |
addColumnSelectionInterval(int index0,
int index1)
Adds the columns from
index0 to index1 ,
inclusive, to the current selection. |
void |
addNotify()
Calls the
configureEnclosingScrollPane method. |
void |
addRowSelectionInterval(int index0,
int index1)
Adds the rows from
index0 to index1 , inclusive, to
the current selection. |
void |
changeSelection(int rowIndex,
int columnIndex,
boolean toggle,
boolean extend)
Updates the selection models of the table, depending on the state of the
two flags:
toggle and extend . |
void |
clearSelection()
Deselects all selected columns and rows.
|
void |
columnAdded(TableColumnModelEvent e)
Invoked when a column is added to the table column model.
|
int |
columnAtPoint(Point point)
Returns the index of the column that
point lies in,
or -1 if the result is not in the range
[0, getColumnCount() -1]. |
void |
columnMarginChanged(ChangeEvent e)
Invoked when a column is moved due to a margin change.
|
void |
columnMoved(TableColumnModelEvent e)
Invoked when a column is repositioned.
|
void |
columnRemoved(TableColumnModelEvent e)
Invoked when a column is removed from the table column model.
|
void |
columnSelectionChanged(ListSelectionEvent e)
Invoked when the selection model of the
TableColumnModel
is changed. |
protected void |
configureEnclosingScrollPane()
If this
JTable is the viewportView of an enclosing JScrollPane
(the usual situation), configure this ScrollPane by, amongst other things,
installing the table's tableHeader as the columnHeaderView of the scroll pane. |
int |
convertColumnIndexToModel(int viewColumnIndex)
Maps the index of the column in the view at
viewColumnIndex to the index of the column
in the table model. |
int |
convertColumnIndexToView(int modelColumnIndex)
Maps the index of the column in the table model at
modelColumnIndex to the index of the column
in the view. |
int |
convertRowIndexToModel(int viewRowIndex)
Maps the index of the row in terms of the view to the
underlying
TableModel . |
int |
convertRowIndexToView(int modelRowIndex)
Maps the index of the row in terms of the
TableModel to the view. |
protected TableColumnModel |
createDefaultColumnModel()
Returns the default column model object, which is
a
DefaultTableColumnModel . |
void |
createDefaultColumnsFromModel()
Creates default columns for the table from
the data model using the
getColumnCount method
defined in the TableModel interface. |
protected TableModel |
createDefaultDataModel()
Returns the default table model object, which is
a
DefaultTableModel . |
protected void |
createDefaultEditors()
Creates default cell editors for objects, numbers, and boolean values.
|
protected void |
createDefaultRenderers()
Creates default cell renderers for objects, numbers, doubles, dates,
booleans, and icons.
|
protected ListSelectionModel |
createDefaultSelectionModel()
Returns the default selection model object, which is
a
DefaultListSelectionModel . |
protected JTableHeader |
createDefaultTableHeader()
Returns the default table header object, which is
a
JTableHeader . |
static JScrollPane |
createScrollPaneForTable(JTable aTable)
Deprecated.
As of Swing version 1.0.2,
replaced by
new JScrollPane(aTable) . |
void |
doLayout()
Causes this table to lay out its rows and columns.
|
boolean |
editCellAt(int row,
int column)
Programmatically starts editing the cell at
row and
column , if those indices are in the valid range, and
the cell at those indices is editable. |
boolean |
editCellAt(int row,
int column,
EventObject e)
Programmatically starts editing the cell at
row and
column , if those indices are in the valid range, and
the cell at those indices is editable. |
void |
editingCanceled(ChangeEvent e)
Invoked when editing is canceled.
|
void |
editingStopped(ChangeEvent e)
Invoked when editing is finished.
|
AccessibleContext |
getAccessibleContext()
Gets the AccessibleContext associated with this JTable.
|
boolean |
getAutoCreateColumnsFromModel()
Determines whether the table will create default columns from the model.
|
boolean |
getAutoCreateRowSorter()
Returns
true if whenever the model changes, a new
RowSorter should be created and installed
as the table's sorter; otherwise, returns false . |
int |
getAutoResizeMode()
Returns the auto resize mode of the table.
|
TableCellEditor |
getCellEditor()
Returns the active cell editor, which is
null if the table
is not currently editing. |
TableCellEditor |
getCellEditor(int row,
int column)
Returns an appropriate editor for the cell specified by
row and column . |
Rectangle |
getCellRect(int row,
int column,
boolean includeSpacing)
Returns a rectangle for the cell that lies at the intersection of
row and column . |
TableCellRenderer |
getCellRenderer(int row,
int column)
Returns an appropriate renderer for the cell specified by this row and
column.
|
boolean |
getCellSelectionEnabled()
Returns true if both row and column selection models are enabled.
|
TableColumn |
getColumn(Object identifier)
Returns the
TableColumn object for the column in the table
whose identifier is equal to identifier , when compared using
equals . |
Class<?> |
getColumnClass(int column)
Returns the type of the column appearing in the view at
column position
column . |
int |
getColumnCount()
Returns the number of columns in the column model.
|
TableColumnModel |
getColumnModel()
Returns the
TableColumnModel that contains all column information
of this table. |
String |
getColumnName(int column)
Returns the name of the column appearing in the view at
column position
column . |
boolean |
getColumnSelectionAllowed()
Returns true if columns can be selected.
|
TableCellEditor |
getDefaultEditor(Class<?> columnClass)
Returns the editor to be used when no editor has been set in
a
TableColumn . |
TableCellRenderer |
getDefaultRenderer(Class<?> columnClass)
Returns the cell renderer to be used when no renderer has been set in
a
TableColumn . |
boolean |
getDragEnabled()
Returns whether or not automatic drag handling is enabled.
|
JTable.DropLocation |
getDropLocation()
Returns the location that this component should visually indicate
as the drop location during a DnD operation over the component,
or
null if no location is to currently be shown. |
DropMode |
getDropMode()
Returns the drop mode for this component.
|
int |
getEditingColumn()
Returns the index of the column that contains the cell currently
being edited.
|
int |
getEditingRow()
Returns the index of the row that contains the cell currently
being edited.
|
Component |
getEditorComponent()
Returns the component that is handling the editing session.
|
boolean |
getFillsViewportHeight()
Returns whether or not this table is always made large enough
to fill the height of an enclosing viewport.
|
Color |
getGridColor()
Returns the color used to draw grid lines.
|
Dimension |
getIntercellSpacing()
Returns the horizontal and vertical space between cells.
|
TableModel |
getModel()
Returns the
TableModel that provides the data displayed by this
JTable . |
Dimension |
getPreferredScrollableViewportSize()
Returns the preferred size of the viewport for this table.
|
Printable |
getPrintable(JTable.PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat)
Return a
Printable for use in printing this JTable. |
int |
getRowCount()
Returns the number of rows that can be shown in the
JTable , given unlimited space. |
int |
getRowHeight()
Returns the height of a table row, in pixels.
|
int |
getRowHeight(int row)
Returns the height, in pixels, of the cells in
row . |
int |
getRowMargin()
Gets the amount of empty space, in pixels, between cells.
|
boolean |
getRowSelectionAllowed()
Returns true if rows can be selected.
|
RowSorter<? extends TableModel> |
getRowSorter()
Returns the object responsible for sorting.
|
int |
getScrollableBlockIncrement(Rectangle visibleRect,
int orientation,
int direction)
Returns
visibleRect.height or
visibleRect.width ,
depending on this table's orientation. |
boolean |
getScrollableTracksViewportHeight()
Returns
false to indicate that the height of the viewport does
not determine the height of the table, unless
getFillsViewportHeight is true and the preferred height
of the table is smaller than the viewport's height. |
boolean |
getScrollableTracksViewportWidth()
Returns false if
autoResizeMode is set to
AUTO_RESIZE_OFF , which indicates that the
width of the viewport does not determine the width
of the table. |
int |
getScrollableUnitIncrement(Rectangle visibleRect,
int orientation,
int direction)
Returns the scroll increment (in pixels) that completely exposes one new
row or column (depending on the orientation).
|
int |
getSelectedColumn()
Returns the index of the first selected column,
-1 if no column is selected.
|
int |
getSelectedColumnCount()
Returns the number of selected columns.
|
int[] |
getSelectedColumns()
Returns the indices of all selected columns.
|
int |
getSelectedRow()
Returns the index of the first selected row, -1 if no row is selected.
|
int |
getSelectedRowCount()
Returns the number of selected rows.
|
int[] |
getSelectedRows()
Returns the indices of all selected rows.
|
Color |
getSelectionBackground()
Returns the background color for selected cells.
|
Color |
getSelectionForeground()
Returns the foreground color for selected cells.
|
ListSelectionModel |
getSelectionModel()
Returns the
ListSelectionModel that is used to maintain row
selection state. |
boolean |
getShowHorizontalLines()
Returns true if the table draws horizontal lines between cells, false if it
doesn't.
|
boolean |
getShowVerticalLines()
Returns true if the table draws vertical lines between cells, false if it
doesn't.
|
boolean |
getSurrendersFocusOnKeystroke()
Returns true if the editor should get the focus
when keystrokes cause the editor to be activated
|
JTableHeader |
getTableHeader()
Returns the
tableHeader used by this JTable . |
String |
getToolTipText(MouseEvent event)
Overrides
JComponent 's getToolTipText
method in order to allow the renderer's tips to be used
if it has text set. |
TableUI |
getUI()
Returns the L&F object that renders this component.
|
String |
getUIClassID()
Returns the suffix used to construct the name of the L&F class used to
render this component.
|
boolean |
getUpdateSelectionOnSort()
Returns true if the selection should be updated after sorting.
|
Object |
getValueAt(int row,
int column)
Returns the cell value at
row and column . |
protected void |
initializeLocalVars()
Initializes table properties to their default values.
|
boolean |
isCellEditable(int row,
int column)
Returns true if the cell at
row and column
is editable. |
boolean |
isCellSelected(int row,
int column)
Returns true if the specified indices are in the valid range of rows
and columns and the cell at the specified position is selected.
|
boolean |
isColumnSelected(int column)
Returns true if the specified index is in the valid range of columns,
and the column at that index is selected.
|
boolean |
isEditing()
Returns true if a cell is being edited.
|
boolean |
isRowSelected(int row)
Returns true if the specified index is in the valid range of rows,
and the row at that index is selected.
|
void |
moveColumn(int column,
int targetColumn)
Moves the column
column to the position currently
occupied by the column targetColumn in the view. |
protected String |
paramString()
Returns a string representation of this table.
|
Component |
prepareEditor(TableCellEditor editor,
int row,
int column)
Prepares the editor by querying the data model for the value and
selection state of the cell at
row , column . |
Component |
prepareRenderer(TableCellRenderer renderer,
int row,
int column)
Prepares the renderer by querying the data model for the
value and selection state
of the cell at
row , column . |
boolean |
print()
A convenience method that displays a printing dialog, and then prints
this
JTable in mode PrintMode.FIT_WIDTH ,
with no header or footer text. |
boolean |
print(JTable.PrintMode printMode)
A convenience method that displays a printing dialog, and then prints
this
JTable in the given printing mode,
with no header or footer text. |
boolean |
print(JTable.PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat)
A convenience method that displays a printing dialog, and then prints
this
JTable in the given printing mode,
with the specified header and footer text. |
boolean |
print(JTable.PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat,
boolean showPrintDialog,
PrintRequestAttributeSet attr,
boolean interactive)
Prints this table, as specified by the fully featured
print
method, with the default printer specified as the print service. |
boolean |
print(JTable.PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat,
boolean showPrintDialog,
PrintRequestAttributeSet attr,
boolean interactive,
PrintService service)
Prints this
JTable . |
protected boolean |
processKeyBinding(KeyStroke ks,
KeyEvent e,
int condition,
boolean pressed)
Invoked to process the key bindings for
ks as the result
of the KeyEvent e . |
void |
removeColumn(TableColumn aColumn)
Removes
aColumn from this JTable 's
array of columns. |
void |
removeColumnSelectionInterval(int index0,
int index1)
Deselects the columns from
index0 to index1 , inclusive. |
void |
removeEditor()
Discards the editor object and frees the real estate it used for
cell rendering.
|
void |
removeNotify()
Calls the
unconfigureEnclosingScrollPane method. |
void |
removeRowSelectionInterval(int index0,
int index1)
Deselects the rows from
index0 to index1 , inclusive. |
protected void |
resizeAndRepaint()
Equivalent to
revalidate followed by repaint . |
int |
rowAtPoint(Point point)
Returns the index of the row that
point lies in,
or -1 if the result is not in the range
[0, getRowCount() -1]. |
void |
selectAll()
Selects all rows, columns, and cells in the table.
|
void |
setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)
Sets this table's
autoCreateColumnsFromModel flag. |
void |
setAutoCreateRowSorter(boolean autoCreateRowSorter)
Specifies whether a
RowSorter should be created for the
table whenever its model changes. |
void |
setAutoResizeMode(int mode)
Sets the table's auto resize mode when the table is resized.
|
void |
setCellEditor(TableCellEditor anEditor)
Sets the active cell editor.
|
void |
setCellSelectionEnabled(boolean cellSelectionEnabled)
Sets whether this table allows both a column selection and a
row selection to exist simultaneously.
|
void |
setColumnModel(TableColumnModel columnModel)
Sets the column model for this table to
newModel and registers
for listener notifications from the new column model. |
void |
setColumnSelectionAllowed(boolean columnSelectionAllowed)
Sets whether the columns in this model can be selected.
|
void |
setColumnSelectionInterval(int index0,
int index1)
Selects the columns from
index0 to index1 ,
inclusive. |
void |
setDefaultEditor(Class<?> columnClass,
TableCellEditor editor)
Sets a default cell editor to be used if no editor has been set in
a
TableColumn . |
void |
setDefaultRenderer(Class<?> columnClass,
TableCellRenderer renderer)
Sets a default cell renderer to be used if no renderer has been set in
a
TableColumn . |
void |
setDragEnabled(boolean b)
Turns on or off automatic drag handling.
|
void |
setDropMode(DropMode dropMode)
Sets the drop mode for this component.
|
void |
setEditingColumn(int aColumn)
Sets the
editingColumn variable. |
void |
setEditingRow(int aRow)
Sets the
editingRow variable. |
void |
setFillsViewportHeight(boolean fillsViewportHeight)
Sets whether or not this table is always made large enough
to fill the height of an enclosing viewport.
|
void |
setGridColor(Color gridColor)
Sets the color used to draw grid lines to
gridColor and redisplays. |
void |
setIntercellSpacing(Dimension intercellSpacing)
Sets the
rowMargin and the columnMargin --
the height and width of the space between cells -- to
intercellSpacing . |
void |
setModel(TableModel dataModel)
Sets the data model for this table to
newModel and registers
with it for listener notifications from the new data model. |
void |
setPreferredScrollableViewportSize(Dimension size)
Sets the preferred size of the viewport for this table.
|
void |
setRowHeight(int rowHeight)
Sets the height, in pixels, of all cells to
rowHeight ,
revalidates, and repaints. |
void |
setRowHeight(int row,
int rowHeight)
Sets the height for
row to rowHeight ,
revalidates, and repaints. |
void |
setRowMargin(int rowMargin)
Sets the amount of empty space between cells in adjacent rows.
|
void |
setRowSelectionAllowed(boolean rowSelectionAllowed)
Sets whether the rows in this model can be selected.
|
void |
setRowSelectionInterval(int index0,
int index1)
Selects the rows from
index0 to index1 ,
inclusive. |
void |
setRowSorter(RowSorter<? extends TableModel> sorter)
Sets the
RowSorter . |
void |
setSelectionBackground(Color selectionBackground)
Sets the background color for selected cells.
|
void |
setSelectionForeground(Color selectionForeground)
Sets the foreground color for selected cells.
|
void |
setSelectionMode(int selectionMode)
Sets the table's selection mode to allow only single selections, a single
contiguous interval, or multiple intervals.
|
void |
setSelectionModel(ListSelectionModel newModel)
Sets the row selection model for this table to
newModel
and registers for listener notifications from the new selection model. |
void |
setShowGrid(boolean showGrid)
Sets whether the table draws grid lines around cells.
|
void |
setShowHorizontalLines(boolean showHorizontalLines)
Sets whether the table draws horizontal lines between cells.
|
void |
setShowVerticalLines(boolean showVerticalLines)
Sets whether the table draws vertical lines between cells.
|
void |
setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)
Sets whether editors in this JTable get the keyboard focus
when an editor is activated as a result of the JTable
forwarding keyboard events for a cell.
|
void |
setTableHeader(JTableHeader tableHeader)
Sets the
tableHeader working with this JTable to newHeader . |
void |
setUI(TableUI ui)
Sets the L&F object that renders this component and repaints.
|
void |
setUpdateSelectionOnSort(boolean update)
Specifies whether the selection should be updated after sorting.
|
void |
setValueAt(Object aValue,
int row,
int column)
Sets the value for the cell in the table model at
row
and column . |
void |
sizeColumnsToFit(boolean lastColumnOnly)
Deprecated.
As of Swing version 1.0.3,
replaced by
doLayout() . |
void |
sizeColumnsToFit(int resizingColumn)
Obsolete as of Java 2 platform v1.4.
|
void |
sorterChanged(RowSorterEvent e)
RowSorterListener notification that the
RowSorter has changed in some way. |
void |
tableChanged(TableModelEvent e)
Invoked when this table's
TableModel generates
a TableModelEvent . |
protected void |
unconfigureEnclosingScrollPane()
Reverses the effect of
configureEnclosingScrollPane
by replacing the columnHeaderView of the enclosing
scroll pane with null . |
void |
updateUI()
Notification from the
UIManager that the L&F has changed. |
void |
valueChanged(ListSelectionEvent e)
Invoked when the row selection changes -- repaints to show the new
selection.
|
addAncestorListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle
public static final int AUTO_RESIZE_OFF
public static final int AUTO_RESIZE_NEXT_COLUMN
public static final int AUTO_RESIZE_SUBSEQUENT_COLUMNS
public static final int AUTO_RESIZE_LAST_COLUMN
public static final int AUTO_RESIZE_ALL_COLUMNS
protected TableModel dataModel
TableModel
of the table.protected TableColumnModel columnModel
TableColumnModel
of the table.protected ListSelectionModel selectionModel
ListSelectionModel
of the table, used to keep track of row selections.protected JTableHeader tableHeader
TableHeader
working with the table.protected int rowHeight
protected int rowMargin
protected Color gridColor
protected boolean showHorizontalLines
showHorizontalLines
is true.protected boolean showVerticalLines
showVerticalLines
is true.protected int autoResizeMode
protected boolean autoCreateColumnsFromModel
TableModel
to build the default
set of columns if this is true.protected Dimension preferredViewportSize
Scrollable
interface to determine the initial visible area.protected boolean rowSelectionAllowed
protected boolean cellSelectionEnabled
rowSelectionAllowed
property and the
columnSelectionAllowed
property of the
columnModel
instead. Or use the
method getCellSelectionEnabled
.protected transient Component editorComp
Component
that is handling the editing.protected transient TableCellEditor cellEditor
null
if the table isn't currently editing.protected transient int editingColumn
protected transient int editingRow
protected transient Hashtable defaultRenderersByColumnClass
getColumnClass
in the TableModel
interface.protected transient Hashtable defaultEditorsByColumnClass
getColumnClass
in the TableModel
interface.protected Color selectionForeground
protected Color selectionBackground
public JTable()
JTable
that is initialized with a default
data model, a default column model, and a default selection
model.public JTable(TableModel dm)
JTable
that is initialized with
dm
as the data model, a default column model,
and a default selection model.dm
- the data model for the tablecreateDefaultColumnModel()
,
createDefaultSelectionModel()
public JTable(TableModel dm, TableColumnModel cm)
JTable
that is initialized with
dm
as the data model, cm
as the column model, and a default selection model.dm
- the data model for the tablecm
- the column model for the tablecreateDefaultSelectionModel()
public JTable(TableModel dm, TableColumnModel cm, ListSelectionModel sm)
JTable
that is initialized with
dm
as the data model, cm
as the
column model, and sm
as the selection model.
If any of the parameters are null
this method
will initialize the table with the corresponding default model.
The autoCreateColumnsFromModel
flag is set to false
if cm
is non-null, otherwise it is set to true
and the column model is populated with suitable
TableColumns
for the columns in dm
.dm
- the data model for the tablecm
- the column model for the tablesm
- the row selection model for the tablecreateDefaultDataModel()
,
createDefaultColumnModel()
,
createDefaultSelectionModel()
public JTable(int numRows, int numColumns)
JTable
with numRows
and numColumns
of empty cells using
DefaultTableModel
. The columns will have
names of the form "A", "B", "C", etc.numRows
- the number of rows the table holdsnumColumns
- the number of columns the table holdsDefaultTableModel
public JTable(Vector rowData, Vector columnNames)
JTable
to display the values in the
Vector
of Vectors
, rowData
,
with column names, columnNames
. The
Vectors
contained in rowData
should contain the values for that row. In other words,
the value of the cell at row 1, column 5 can be obtained
with the following code:
((Vector)rowData.elementAt(1)).elementAt(5);
rowData
- the data for the new tablecolumnNames
- names of each columnpublic JTable(Object[][] rowData, Object[] columnNames)
JTable
to display the values in the two dimensional array,
rowData
, with column names, columnNames
.
rowData
is an array of rows, so the value of the cell at row 1,
column 5 can be obtained with the following code:
rowData[1][5];
All rows must be of the same length as columnNames
.
rowData
- the data for the new tablecolumnNames
- names of each columnpublic void addNotify()
configureEnclosingScrollPane
method.addNotify
in class JComponent
configureEnclosingScrollPane()
protected void configureEnclosingScrollPane()
JTable
is the viewportView
of an enclosing JScrollPane
(the usual situation), configure this ScrollPane
by, amongst other things,
installing the table's tableHeader
as the columnHeaderView
of the scroll pane.
When a JTable
is added to a JScrollPane
in the usual way,
using new JScrollPane(myTable)
, addNotify
is
called in the JTable
(when the table is added to the viewport).
JTable
's addNotify
method in turn calls this method,
which is protected so that this default installation procedure can
be overridden by a subclass.addNotify()
public void removeNotify()
unconfigureEnclosingScrollPane
method.removeNotify
in class JComponent
unconfigureEnclosingScrollPane()
protected void unconfigureEnclosingScrollPane()
configureEnclosingScrollPane
by replacing the columnHeaderView
of the enclosing
scroll pane with null
. JTable
's
removeNotify
method calls
this method, which is protected so that this default uninstallation
procedure can be overridden by a subclass.removeNotify()
,
configureEnclosingScrollPane()
@Deprecated public static JScrollPane createScrollPaneForTable(JTable aTable)
new JScrollPane(aTable)
.new JScrollPane(aTable)
.public void setTableHeader(JTableHeader tableHeader)
tableHeader
working with this JTable
to newHeader
.
It is legal to have a null
tableHeader
.tableHeader
- new tableHeadergetTableHeader()
public JTableHeader getTableHeader()
tableHeader
used by this JTable
.tableHeader
used by this tablesetTableHeader(javax.swing.table.JTableHeader)
public void setRowHeight(int rowHeight)
rowHeight
,
revalidates, and repaints.
The height of the cells will be equal to the row height minus
the row margin.rowHeight
- new row heightIllegalArgumentException
- if rowHeight
is
less than 1getRowHeight()
public int getRowHeight()
setRowHeight(int)
public void setRowHeight(int row, int rowHeight)
row
to rowHeight
,
revalidates, and repaints. The height of the cells in this row
will be equal to the row height minus the row margin.row
- the row whose height is being
changedrowHeight
- new row height, in pixelsIllegalArgumentException
- if rowHeight
is
less than 1public int getRowHeight(int row)
row
.row
- the row whose height is to be returnedpublic void setRowMargin(int rowMargin)
rowMargin
- the number of pixels between cells in a rowgetRowMargin()
public int getRowMargin()
getIntercellSpacing().height
.setRowMargin(int)
public void setIntercellSpacing(Dimension intercellSpacing)
rowMargin
and the columnMargin
--
the height and width of the space between cells -- to
intercellSpacing
.intercellSpacing
- a Dimension
specifying the new width
and height between cellsgetIntercellSpacing()
public Dimension getIntercellSpacing()
setIntercellSpacing(java.awt.Dimension)
public void setGridColor(Color gridColor)
gridColor
and redisplays.
The default color is look and feel dependent.gridColor
- the new color of the grid linesIllegalArgumentException
- if gridColor
is null
getGridColor()
public Color getGridColor()
setGridColor(java.awt.Color)
public void setShowGrid(boolean showGrid)
showGrid
is true it does; if it is false it doesn't.
There is no getShowGrid
method as this state is held
in two variables -- showHorizontalLines
and showVerticalLines
--
each of which can be queried independently.showGrid
- true if table view should draw grid linessetShowVerticalLines(boolean)
,
setShowHorizontalLines(boolean)
public void setShowHorizontalLines(boolean showHorizontalLines)
showHorizontalLines
is true it does; if it is false it doesn't.showHorizontalLines
- true if table view should draw horizontal linesgetShowHorizontalLines()
,
setShowGrid(boolean)
,
setShowVerticalLines(boolean)
public void setShowVerticalLines(boolean showVerticalLines)
showVerticalLines
is true it does; if it is false it doesn't.showVerticalLines
- true if table view should draw vertical linesgetShowVerticalLines()
,
setShowGrid(boolean)
,
setShowHorizontalLines(boolean)
public boolean getShowHorizontalLines()
setShowHorizontalLines(boolean)
public boolean getShowVerticalLines()
setShowVerticalLines(boolean)
public void setAutoResizeMode(int mode)
doLayout()
.mode
- One of 5 legal values:
AUTO_RESIZE_OFF,
AUTO_RESIZE_NEXT_COLUMN,
AUTO_RESIZE_SUBSEQUENT_COLUMNS,
AUTO_RESIZE_LAST_COLUMN,
AUTO_RESIZE_ALL_COLUMNSgetAutoResizeMode()
,
doLayout()
public int getAutoResizeMode()
setAutoResizeMode(int)
,
doLayout()
public void setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)
autoCreateColumnsFromModel
flag.
This method calls createDefaultColumnsFromModel
if
autoCreateColumnsFromModel
changes from false to true.autoCreateColumnsFromModel
- true if JTable
should automatically create columnsgetAutoCreateColumnsFromModel()
,
createDefaultColumnsFromModel()
public boolean getAutoCreateColumnsFromModel()
setModel
will clear any existing columns and
create new columns from the new model. Also, if the event in
the tableChanged
notification specifies that the
entire table changed, then the columns will be rebuilt.
The default is true.setAutoCreateColumnsFromModel(boolean)
,
createDefaultColumnsFromModel()
public void createDefaultColumnsFromModel()
getColumnCount
method
defined in the TableModel
interface.
Clears any existing columns before creating the new columns based on information from the model.
getAutoCreateColumnsFromModel()
public void setDefaultRenderer(Class<?> columnClass, TableCellRenderer renderer)
TableColumn
. If renderer is null
,
removes the default renderer for this column class.columnClass
- set the default cell renderer for this columnClassrenderer
- default cell renderer to be used for this
columnClassgetDefaultRenderer(java.lang.Class<?>)
,
setDefaultEditor(java.lang.Class<?>, javax.swing.table.TableCellEditor)
public TableCellRenderer getDefaultRenderer(Class<?> columnClass)
TableColumn
. During the rendering of cells the renderer is fetched from
a Hashtable
of entries according to the class of the cells in the column. If
there is no entry for this columnClass
the method returns
the entry for the most specific superclass. The JTable
installs entries
for Object
, Number
, and Boolean
, all of which can be modified
or replaced.columnClass
- return the default cell renderer
for this columnClasssetDefaultRenderer(java.lang.Class<?>, javax.swing.table.TableCellRenderer)
,
getColumnClass(int)
public void setDefaultEditor(Class<?> columnClass, TableCellEditor editor)
TableColumn
. If no editing is required in a table, or a
particular column in a table, uses the isCellEditable
method in the TableModel
interface to ensure that this
JTable
will not start an editor in these columns.
If editor is null
, removes the default editor for this
column class.columnClass
- set the default cell editor for this columnClasseditor
- default cell editor to be used for this columnClassTableModel.isCellEditable(int, int)
,
getDefaultEditor(java.lang.Class<?>)
,
setDefaultRenderer(java.lang.Class<?>, javax.swing.table.TableCellRenderer)
public TableCellEditor getDefaultEditor(Class<?> columnClass)
TableColumn
. During the editing of cells the editor is fetched from
a Hashtable
of entries according to the class of the cells in the column. If
there is no entry for this columnClass
the method returns
the entry for the most specific superclass. The JTable
installs entries
for Object
, Number
, and Boolean
, all of which can be modified
or replaced.columnClass
- return the default cell editor for this columnClasssetDefaultEditor(java.lang.Class<?>, javax.swing.table.TableCellEditor)
,
getColumnClass(int)
public void setDragEnabled(boolean b)
true
, and the
table's TransferHandler
needs to be non-null
.
The default value of the dragEnabled
property is false
.
The job of honoring this property, and recognizing a user drag gesture,
lies with the look and feel implementation, and in particular, the table's
TableUI
. When automatic drag handling is enabled, most look and
feels (including those that subclass BasicLookAndFeel
) begin a
drag and drop operation whenever the user presses the mouse button over
an item (in single selection mode) or a selection (in other selection
modes) and then moves the mouse a few pixels. Setting this property to
true
can therefore have a subtle effect on how selections behave.
If a look and feel is used that ignores this property, you can still
begin a drag and drop operation by calling exportAsDrag
on the
table's TransferHandler
.
b
- whether or not to enable automatic drag handlingHeadlessException
- if
b
is true
and
GraphicsEnvironment.isHeadless()
returns true
GraphicsEnvironment.isHeadless()
,
getDragEnabled()
,
JComponent.setTransferHandler(javax.swing.TransferHandler)
,
TransferHandler
public boolean getDragEnabled()
dragEnabled
propertysetDragEnabled(boolean)
public final void setDropMode(DropMode dropMode)
DropMode.USE_SELECTION
.
Usage of one of the other modes is recommended, however, for an
improved user experience. DropMode.ON
, for instance,
offers similar behavior of showing items as selected, but does so without
affecting the actual selection in the table.
JTable
supports the following drop modes:
DropMode.USE_SELECTION
DropMode.ON
DropMode.INSERT
DropMode.INSERT_ROWS
DropMode.INSERT_COLS
DropMode.ON_OR_INSERT
DropMode.ON_OR_INSERT_ROWS
DropMode.ON_OR_INSERT_COLS
The drop mode is only meaningful if this component has a
TransferHandler
that accepts drops.
dropMode
- the drop mode to useIllegalArgumentException
- if the drop mode is unsupported
or null
getDropMode()
,
getDropLocation()
,
JComponent.setTransferHandler(javax.swing.TransferHandler)
,
TransferHandler
public final DropMode getDropMode()
setDropMode(javax.swing.DropMode)
public final JTable.DropLocation getDropLocation()
null
if no location is to currently be shown.
This method is not meant for querying the drop location
from a TransferHandler
, as the drop location is only
set after the TransferHandler
's canImport
has returned and has allowed for the location to be shown.
When this property changes, a property change event with name "dropLocation" is fired by the component.
setDropMode(javax.swing.DropMode)
,
TransferHandler.canImport(TransferHandler.TransferSupport)
public void setAutoCreateRowSorter(boolean autoCreateRowSorter)
RowSorter
should be created for the
table whenever its model changes.
When setAutoCreateRowSorter(true)
is invoked, a TableRowSorter
is immediately created and installed on the
table. While the autoCreateRowSorter
property remains
true
, every time the model is changed, a new TableRowSorter
is created and set as the table's row sorter.
autoCreateRowSorter
- whether or not a RowSorter
should be automatically createdTableRowSorter
public boolean getAutoCreateRowSorter()
true
if whenever the model changes, a new
RowSorter
should be created and installed
as the table's sorter; otherwise, returns false
.RowSorter
should be created when
the model changespublic void setUpdateSelectionOnSort(boolean update)
update
- whether or not to update the selection on sortingpublic boolean getUpdateSelectionOnSort()
public void setRowSorter(RowSorter<? extends TableModel> sorter)
RowSorter
. RowSorter
is used
to provide sorting and filtering to a JTable
.
This method clears the selection and resets any variable row heights.
This method fires a PropertyChangeEvent
when appropriate,
with the property name "rowSorter"
. For
backward-compatibility, this method fires an additional event with the
property name "sorter"
.
If the underlying model of the RowSorter
differs from
that of this JTable
undefined behavior will result.
sorter
- the RowSorter
; null
turns
sorting offTableRowSorter
public RowSorter<? extends TableModel> getRowSorter()
public void setSelectionMode(int selectionMode)
JTable
provides all the methods for handling
column and row selection. When setting states,
such as setSelectionMode
, it not only
updates the mode for the row selection model but also sets similar
values in the selection model of the columnModel
.
If you want to have the row and column selection models operating
in different modes, set them both directly.
Both the row and column selection models for JTable
default to using a DefaultListSelectionModel
so that JTable
works the same way as the
JList
. See the setSelectionMode
method
in JList
for details about the modes.
JList.setSelectionMode(int)
public void setRowSelectionAllowed(boolean rowSelectionAllowed)
rowSelectionAllowed
- true if this model will allow row selectiongetRowSelectionAllowed()
public boolean getRowSelectionAllowed()
setRowSelectionAllowed(boolean)
public void setColumnSelectionAllowed(boolean columnSelectionAllowed)
columnSelectionAllowed
- true if this model will allow column selectiongetColumnSelectionAllowed()
public boolean getColumnSelectionAllowed()
setColumnSelectionAllowed(boolean)
public void setCellSelectionEnabled(boolean cellSelectionEnabled)
isCellSelected
to
change this default behavior. This method is equivalent to setting
both the rowSelectionAllowed
property and
columnSelectionAllowed
property of the
columnModel
to the supplied value.cellSelectionEnabled
- true if simultaneous row and column
selection is allowedgetCellSelectionEnabled()
,
isCellSelected(int, int)
public boolean getCellSelectionEnabled()
getRowSelectionAllowed() &&
getColumnSelectionAllowed()
.setCellSelectionEnabled(boolean)
public void selectAll()
public void clearSelection()
public void setRowSelectionInterval(int index0, int index1)
index0
to index1
,
inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or
index1
lie outside
[0, getRowCount()
-1]public void setColumnSelectionInterval(int index0, int index1)
index0
to index1
,
inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or
index1
lie outside
[0, getColumnCount()
-1]public void addRowSelectionInterval(int index0, int index1)
index0
to index1
, inclusive, to
the current selection.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or index1
lie outside [0, getRowCount()
-1]public void addColumnSelectionInterval(int index0, int index1)
index0
to index1
,
inclusive, to the current selection.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or
index1
lie outside
[0, getColumnCount()
-1]public void removeRowSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or
index1
lie outside
[0, getRowCount()
-1]public void removeColumnSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or
index1
lie outside
[0, getColumnCount()
-1]public int getSelectedRow()
public int getSelectedColumn()
public int[] getSelectedRows()
getSelectedRow()
public int[] getSelectedColumns()
getSelectedColumn()
public int getSelectedRowCount()
public int getSelectedColumnCount()
public boolean isRowSelected(int row)
row
is a valid index and the row at
that index is selected (where 0 is the first row)public boolean isColumnSelected(int column)
column
- the column in the column modelcolumn
is a valid index and the column at
that index is selected (where 0 is the first column)public boolean isCellSelected(int row, int column)
row
- the row being queriedcolumn
- the column being queriedrow
and column
are valid indices
and the cell at index (row, column)
is selected,
where the first row and first column are at index 0public void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend)
toggle
and extend
. Most changes
to the selection that are the result of keyboard or mouse events received
by the UI are channeled through this method so that the behavior may be
overridden by a subclass. Some UIs may need more functionality than
this method provides, such as when manipulating the lead for discontiguous
selection, and may not call into this method for some selection changes.
This implementation uses the following conventions:
toggle
: false, extend
: false.
Clear the previous selection and ensure the new cell is selected.
toggle
: false, extend
: true.
Extend the previous selection from the anchor to the specified cell,
clearing all other selections.
toggle
: true, extend
: false.
If the specified cell is selected, deselect it. If it is not selected, select it.
toggle
: true, extend
: true.
Apply the selection state of the anchor to all cells between it and the
specified cell.
rowIndex
- affects the selection at row
columnIndex
- affects the selection at column
toggle
- see description aboveextend
- if true, extend the current selectionpublic Color getSelectionForeground()
Color
object for the foreground propertysetSelectionForeground(java.awt.Color)
,
setSelectionBackground(java.awt.Color)
public void setSelectionForeground(Color selectionForeground)
The default value of this property is defined by the look and feel implementation.
This is a JavaBeans bound property.
selectionForeground
- the Color
to use in the foreground
for selected list itemsgetSelectionForeground()
,
setSelectionBackground(java.awt.Color)
,
JComponent.setForeground(java.awt.Color)
,
JComponent.setBackground(java.awt.Color)
,
JComponent.setFont(java.awt.Font)
public Color getSelectionBackground()
Color
used for the background of selected list itemssetSelectionBackground(java.awt.Color)
,
setSelectionForeground(java.awt.Color)
public void setSelectionBackground(Color selectionBackground)
The default value of this property is defined by the look and feel implementation.
This is a JavaBeans bound property.
selectionBackground
- the Color
to use for the background
of selected cellsgetSelectionBackground()
,
setSelectionForeground(java.awt.Color)
,
JComponent.setForeground(java.awt.Color)
,
JComponent.setBackground(java.awt.Color)
,
JComponent.setFont(java.awt.Font)
public TableColumn getColumn(Object identifier)
TableColumn
object for the column in the table
whose identifier is equal to identifier
, when compared using
equals
.identifier
- the identifier objectTableColumn
object that matches the identifierIllegalArgumentException
- if identifier
is null
or no TableColumn
has this identifierpublic int convertColumnIndexToModel(int viewColumnIndex)
viewColumnIndex
to the index of the column
in the table model. Returns the index of the corresponding
column in the model. If viewColumnIndex
is less than zero, returns viewColumnIndex
.viewColumnIndex
- the index of the column in the viewconvertColumnIndexToView(int)
public int convertColumnIndexToView(int modelColumnIndex)
modelColumnIndex
to the index of the column
in the view. Returns the index of the
corresponding column in the view; returns -1 if this column is not
being displayed. If modelColumnIndex
is less than zero,
returns modelColumnIndex
.modelColumnIndex
- the index of the column in the modelconvertColumnIndexToModel(int)
public int convertRowIndexToView(int modelRowIndex)
TableModel
to the view. If the contents of the
model are not sorted the model and view indices are the same.modelRowIndex
- the index of the row in terms of the modelIndexOutOfBoundsException
- if sorting is enabled and passed an
index outside the number of rows of the TableModel
TableRowSorter
public int convertRowIndexToModel(int viewRowIndex)
TableModel
. If the contents of the
model are not sorted the model and view indices are the same.viewRowIndex
- the index of the row in the viewIndexOutOfBoundsException
- if sorting is enabled and passed an
index outside the range of the JTable
as
determined by the method getRowCount
TableRowSorter
,
getRowCount()
public int getRowCount()
JTable
, given unlimited space. If a
RowSorter
with a filter has been specified, the
number of rows returned may differ from that of the underlying
TableModel
.JTable
getColumnCount()
public int getColumnCount()
getRowCount()
,
removeColumn(javax.swing.table.TableColumn)
public String getColumnName(int column)
column
.column
- the column in the view being queriedcolumn
in the view where the first column is column 0public Class<?> getColumnClass(int column)
column
.column
- the column in the view being queriedcolumn
in the view where the first column is column 0public Object getValueAt(int row, int column)
row
and column
.
Note: The column is specified in the table view's display
order, and not in the TableModel
's column
order. This is an important distinction because as the
user rearranges the columns in the table,
the column at a given index in the view will change.
Meanwhile the user's actions never affect the model's
column ordering.
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queriedpublic void setValueAt(Object aValue, int row, int column)
row
and column
.
Note: The column is specified in the table view's display
order, and not in the TableModel
's column
order. This is an important distinction because as the
user rearranges the columns in the table,
the column at a given index in the view will change.
Meanwhile the user's actions never affect the model's
column ordering.
aValue
is the new value.
aValue
- the new valuerow
- the row of the cell to be changedcolumn
- the column of the cell to be changedgetValueAt(int, int)
public boolean isCellEditable(int row, int column)
row
and column
is editable. Otherwise, invoking setValueAt
on the cell
will have no effect.
Note: The column is specified in the table view's display
order, and not in the TableModel
's column
order. This is an important distinction because as the
user rearranges the columns in the table,
the column at a given index in the view will change.
Meanwhile the user's actions never affect the model's
column ordering.
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queriedsetValueAt(java.lang.Object, int, int)
public void addColumn(TableColumn aColumn)
aColumn
to the end of the array of columns held by
this JTable
's column model.
If the column name of aColumn
is null
,
sets the column name of aColumn
to the name
returned by getModel().getColumnName()
.
To add a column to this JTable
to display the
modelColumn
'th column of data in the model with a
given width
, cellRenderer
,
and cellEditor
you can use:
addColumn(new TableColumn(modelColumn, width, cellRenderer, cellEditor));[Any of the
TableColumn
constructors can be used
instead of this one.]
The model column number is stored inside the TableColumn
and is used during rendering and editing to locate the appropriates
data values in the model. The model column number does not change
when columns are reordered in the view.aColumn
- the TableColumn
to be addedremoveColumn(javax.swing.table.TableColumn)
public void removeColumn(TableColumn aColumn)
aColumn
from this JTable
's
array of columns. Note: this method does not remove the column
of data from the model; it just removes the TableColumn
that was responsible for displaying it.aColumn
- the TableColumn
to be removedaddColumn(javax.swing.table.TableColumn)
public void moveColumn(int column, int targetColumn)
column
to the position currently
occupied by the column targetColumn
in the view.
The old column at targetColumn
is
shifted left or right to make room.column
- the index of column to be movedtargetColumn
- the new index of the columnpublic int columnAtPoint(Point point)
point
lies in,
or -1 if the result is not in the range
[0, getColumnCount()
-1].point
- the location of interestpoint
lies in,
or -1 if the result is not in the range
[0, getColumnCount()
-1]rowAtPoint(java.awt.Point)
public int rowAtPoint(Point point)
point
lies in,
or -1 if the result is not in the range
[0, getRowCount()
-1].point
- the location of interestpoint
lies in,
or -1 if the result is not in the range
[0, getRowCount()
-1]columnAtPoint(java.awt.Point)
public Rectangle getCellRect(int row, int column, boolean includeSpacing)
row
and column
.
If includeSpacing
is true then the value returned
has the full height and width of the row and column
specified. If it is false, the returned rectangle is inset by the
intercell spacing to return the true bounds of the rendering or
editing component as it will be set during rendering.
If the column index is valid but the row index is less
than zero the method returns a rectangle with the
y
and height
values set appropriately
and the x
and width
values both set
to zero. In general, when either the row or column indices indicate a
cell outside the appropriate range, the method returns a rectangle
depicting the closest edge of the closest cell that is within
the table's range. When both row and column indices are out
of range the returned rectangle covers the closest
point of the closest cell.
In all cases, calculations that use this method to calculate
results along one axis will not fail because of anomalies in
calculations along the other axis. When the cell is not valid
the includeSpacing
parameter is ignored.
row
- the row index where the desired cell
is locatedcolumn
- the column index where the desired cell
is located in the display; this is not
necessarily the same as the column index
in the data model for the table; the
convertColumnIndexToView(int)
method may be used to convert a data
model column index to a display
column indexincludeSpacing
- if false, return the true cell bounds -
computed by subtracting the intercell
spacing from the height and widths of
the column and row modelsrow
,column
getIntercellSpacing()
public void doLayout()
JTable
's
columns is equal to the width of the table.
Before the layout begins the method gets the
resizingColumn
of the tableHeader
.
When the method is called as a result of the resizing of an enclosing window,
the resizingColumn
is null
. This means that resizing
has taken place "outside" the JTable
and the change -
or "delta" - should be distributed to all of the columns regardless
of this JTable
's automatic resize mode.
If the resizingColumn
is not null
, it is one of
the columns in the table that has changed size rather than
the table itself. In this case the auto-resize modes govern
the way the extra (or deficit) space is distributed
amongst the available columns.
The modes are:
Viewport
. If the JTable
is not
enclosed in a JScrollPane
this may
leave parts of the table invisible.
JTable
, including the one that is being
adjusted.
JTable
makes adjustments
to the widths of the columns it respects their minimum and
maximum values absolutely. It is therefore possible that,
even after this method is called, the total width of the columns
is still not equal to the width of the table. When this happens
the JTable
does not put itself
in AUTO_RESIZE_OFF mode to bring up a scroll bar, or break other
commitments of its current auto-resize mode -- instead it
allows its bounds to be set larger (or smaller) than the total of the
column minimum or maximum, meaning, either that there
will not be enough room to display all of the columns, or that the
columns will not fill the JTable
's bounds.
These respectively, result in the clipping of some columns
or an area being painted in the JTable
's
background color during painting.
The mechanism for distributing the delta amongst the available
columns is provided in a private method in the JTable
class:
adjustSizes(long targetSize, final Resizable3 r, boolean inverse)an explanation of which is provided in the following section.
Resizable3
is a private
interface that allows any data structure containing a collection
of elements with a size, preferred size, maximum size and minimum size
to have its elements manipulated by the algorithm.
Call "DELTA" the difference between the target size and the sum of the preferred sizes of the elements in r. The individual sizes are calculated by taking the original preferred sizes and adding a share of the DELTA - that share being based on how far each preferred size is from its limiting bound (minimum or maximum).
Call the individual constraints min[i], max[i], and pref[i].
Call their respective sums: MIN, MAX, and PREF.
Each new size will be calculated using:
size[i] = pref[i] + delta[i]where each individual delta[i] is calculated according to:
If (DELTA < 0) we are in shrink mode where:
DELTA delta[i] = ------------ * (pref[i] - min[i]) (PREF - MIN)If (DELTA > 0) we are in expand mode where:
DELTA delta[i] = ------------ * (max[i] - pref[i]) (MAX - PREF)
The overall effect is that the total size moves that same percentage, k, towards the total minimum or maximum and that percentage guarantees accomodation of the required space, DELTA.
Naive evaluation of the formulae presented here would be subject to
the aggregated rounding errors caused by doing this operation in finite
precision (using ints). To deal with this, the multiplying factor above,
is constantly recalculated and this takes account of the rounding
errors in the previous iterations. The result is an algorithm that
produces a set of integers whose values exactly sum to the supplied
targetSize
, and does so by spreading the rounding
errors evenly over the given elements.
When targetSize
is outside the [MIN, MAX] range,
the algorithm sets all sizes to their appropriate limiting value
(maximum or minimum).
doLayout
in class Container
LayoutManager.layoutContainer(java.awt.Container)
,
Container.setLayout(java.awt.LayoutManager)
,
Container.validate()
@Deprecated public void sizeColumnsToFit(boolean lastColumnOnly)
doLayout()
.doLayout()
public void sizeColumnsToFit(int resizingColumn)
doLayout()
method instead.resizingColumn
- the column whose resizing made this adjustment
necessary or -1 if there is no such columndoLayout()
public String getToolTipText(MouseEvent event)
JComponent
's getToolTipText
method in order to allow the renderer's tips to be used
if it has text set.
JTable
to properly display
tooltips of its renderers
JTable
must be a registered component with the
ToolTipManager
.
This is done automatically in initializeLocalVars
,
but if at a later point JTable
is told
setToolTipText(null)
it will unregister the table
component, and no tips from renderers will display anymore.
getToolTipText
in class JComponent
JComponent.getToolTipText()
public void setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)
surrendersFocusOnKeystroke
- true if the editor should get the focus
when keystrokes cause the editor to be
activatedgetSurrendersFocusOnKeystroke()
public boolean getSurrendersFocusOnKeystroke()
setSurrendersFocusOnKeystroke(boolean)
public boolean editCellAt(int row, int column)
row
and
column
, if those indices are in the valid range, and
the cell at those indices is editable.
Note that this is a convenience method for
editCellAt(int, int, null)
.row
- the row to be editedcolumn
- the column to be editedpublic boolean editCellAt(int row, int column, EventObject e)
row
and
column
, if those indices are in the valid range, and
the cell at those indices is editable.
To prevent the JTable
from
editing a particular table, column or cell value, return false from
the isCellEditable
method in the TableModel
interface.row
- the row to be editedcolumn
- the column to be editede
- event to pass into shouldSelectCell
;
note that as of Java 2 platform v1.2, the call to
shouldSelectCell
is no longer madepublic boolean isEditing()
editingColumn
,
editingRow
public Component getEditorComponent()
public int getEditingColumn()
editingRow
public int getEditingRow()
editingColumn
public TableUI getUI()
TableUI
object that renders this componentpublic void setUI(TableUI ui)
ui
- the TableUI L&F objectUIDefaults.getUI(javax.swing.JComponent)
public void updateUI()
UIManager
that the L&F has changed.
Replaces the current UI object with the latest version from the
UIManager
.updateUI
in class JComponent
JComponent.updateUI()
public String getUIClassID()
getUIClassID
in class JComponent
JComponent.getUIClassID()
,
UIDefaults.getUI(javax.swing.JComponent)
public void setModel(TableModel dataModel)
newModel
and registers
with it for listener notifications from the new data model.dataModel
- the new data source for this tableIllegalArgumentException
- if newModel
is null
getModel()
public TableModel getModel()
TableModel
that provides the data displayed by this
JTable
.TableModel
that provides the data displayed by this JTable
setModel(javax.swing.table.TableModel)
public void setColumnModel(TableColumnModel columnModel)
newModel
and registers
for listener notifications from the new column model. Also sets
the column model of the JTableHeader
to columnModel
.columnModel
- the new data source for this tableIllegalArgumentException
- if columnModel
is null
getColumnModel()
public TableColumnModel getColumnModel()
TableColumnModel
that contains all column information
of this table.setColumnModel(javax.swing.table.TableColumnModel)
public void setSelectionModel(ListSelectionModel newModel)
newModel
and registers for listener notifications from the new selection model.newModel
- the new selection modelIllegalArgumentException
- if newModel
is null
getSelectionModel()
public ListSelectionModel getSelectionModel()
ListSelectionModel
that is used to maintain row
selection state.null
if row selection is not allowedsetSelectionModel(javax.swing.ListSelectionModel)
public void sorterChanged(RowSorterEvent e)
RowSorterListener
notification that the
RowSorter
has changed in some way.sorterChanged
in interface RowSorterListener
e
- the RowSorterEvent
describing the changeNullPointerException
- if e
is null
public void tableChanged(TableModelEvent e)
TableModel
generates
a TableModelEvent
.
The TableModelEvent
should be constructed in the
coordinate system of the model; the appropriate mapping to the
view coordinate system is performed by this JTable
when it receives the event.
Application code will not use these methods explicitly, they
are used internally by JTable
.
Note that as of 1.3, this method clears the selection, if any.
tableChanged
in interface TableModelListener
public void columnAdded(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnAdded
in interface TableColumnModelListener
TableColumnModelListener
public void columnRemoved(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnRemoved
in interface TableColumnModelListener
TableColumnModelListener
public void columnMoved(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnMoved
in interface TableColumnModelListener
e
- the event receivedTableColumnModelListener
public void columnMarginChanged(ChangeEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnMarginChanged
in interface TableColumnModelListener
e
- the event receivedTableColumnModelListener
public void columnSelectionChanged(ListSelectionEvent e)
TableColumnModel
is changed.
Application code will not use these methods explicitly, they are used internally by JTable.
columnSelectionChanged
in interface TableColumnModelListener
e
- the event receivedTableColumnModelListener
public void valueChanged(ListSelectionEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
valueChanged
in interface ListSelectionListener
e
- the event receivedListSelectionListener
public void editingStopped(ChangeEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
editingStopped
in interface CellEditorListener
e
- the event receivedCellEditorListener
public void editingCanceled(ChangeEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
editingCanceled
in interface CellEditorListener
e
- the event receivedCellEditorListener
public void setPreferredScrollableViewportSize(Dimension size)
size
- a Dimension
object specifying the preferredSize
of a
JViewport
whose view is this tableScrollable.getPreferredScrollableViewportSize()
public Dimension getPreferredScrollableViewportSize()
getPreferredScrollableViewportSize
in interface Scrollable
Dimension
object containing the preferredSize
of the JViewport
which displays this tableScrollable.getPreferredScrollableViewportSize()
public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction)
This method is called each time the user requests a unit scroll.
getScrollableUnitIncrement
in interface Scrollable
visibleRect
- the view area visible within the viewportorientation
- either SwingConstants.VERTICAL
or SwingConstants.HORIZONTAL
direction
- less than zero to scroll up/left,
greater than zero for down/rightScrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)
public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction)
visibleRect.height
or
visibleRect.width
,
depending on this table's orientation. Note that as of Swing 1.1.1
(Java 2 v 1.2.2) the value
returned will ensure that the viewport is cleanly aligned on
a row boundary.getScrollableBlockIncrement
in interface Scrollable
visibleRect
- The view area visible within the viewportorientation
- Either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL.direction
- Less than zero to scroll up/left, greater than zero for down/right.visibleRect.height
or
visibleRect.width
per the orientationScrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)
public boolean getScrollableTracksViewportWidth()
autoResizeMode
is set to
AUTO_RESIZE_OFF
, which indicates that the
width of the viewport does not determine the width
of the table. Otherwise returns true.getScrollableTracksViewportWidth
in interface Scrollable
autoResizeMode
is set
to AUTO_RESIZE_OFF
, otherwise returns trueScrollable.getScrollableTracksViewportWidth()
public boolean getScrollableTracksViewportHeight()
false
to indicate that the height of the viewport does
not determine the height of the table, unless
getFillsViewportHeight
is true
and the preferred height
of the table is smaller than the viewport's height.getScrollableTracksViewportHeight
in interface Scrollable
false
unless getFillsViewportHeight
is
true
and the table needs to be stretched to fill
the viewportScrollable.getScrollableTracksViewportHeight()
,
setFillsViewportHeight(boolean)
,
getFillsViewportHeight()
public void setFillsViewportHeight(boolean fillsViewportHeight)
false
.fillsViewportHeight
- whether or not this table is always
made large enough to fill the height of an enclosing
viewportgetFillsViewportHeight()
,
getScrollableTracksViewportHeight()
public boolean getFillsViewportHeight()
setFillsViewportHeight(boolean)
protected boolean processKeyBinding(KeyStroke ks, KeyEvent e, int condition, boolean pressed)
JComponent
ks
as the result
of the KeyEvent
e
. This obtains
the appropriate InputMap
,
gets the binding, gets the action from the ActionMap
,
and then (if the action is found and the component
is enabled) invokes notifyAction
to notify the action.processKeyBinding
in class JComponent
ks
- the KeyStroke
queriede
- the KeyEvent
condition
- one of the following values:
pressed
- true if the key is pressedprotected void createDefaultRenderers()
DefaultTableCellRenderer
protected void createDefaultEditors()
DefaultCellEditor
protected void initializeLocalVars()
protected TableModel createDefaultDataModel()
DefaultTableModel
. A subclass can override this
method to return a different table model object.DefaultTableModel
protected TableColumnModel createDefaultColumnModel()
DefaultTableColumnModel
. A subclass can override this
method to return a different column model object.DefaultTableColumnModel
protected ListSelectionModel createDefaultSelectionModel()
DefaultListSelectionModel
. A subclass can override this
method to return a different selection model object.DefaultListSelectionModel
protected JTableHeader createDefaultTableHeader()
JTableHeader
. A subclass can override this
method to return a different table header object.JTableHeader
protected void resizeAndRepaint()
revalidate
followed by repaint
.public TableCellEditor getCellEditor()
null
if the table
is not currently editing.TableCellEditor
that does the editing,
or null
if the table is not currently editing.cellEditor
,
getCellEditor(int, int)
public void setCellEditor(TableCellEditor anEditor)
anEditor
- the active cell editorcellEditor
public void setEditingColumn(int aColumn)
editingColumn
variable.aColumn
- the column of the cell to be editededitingColumn
public void setEditingRow(int aRow)
editingRow
variable.aRow
- the row of the cell to be editededitingRow
public TableCellRenderer getCellRenderer(int row, int column)
TableColumn
for this column has a non-null
renderer, returns that. If not, finds the class of the data in
this column (using getColumnClass
)
and returns the default renderer for this type of data.
Note: Throughout the table package, the internal implementations always use this method to provide renderers so that this default behavior can be safely overridden by a subclass.
row
- the row of the cell to render, where 0 is the first rowcolumn
- the column of the cell to render,
where 0 is the first columnnull
returns the default renderer
for this type of objectDefaultTableCellRenderer
,
TableColumn.setCellRenderer(javax.swing.table.TableCellRenderer)
,
setDefaultRenderer(java.lang.Class<?>, javax.swing.table.TableCellRenderer)
public Component prepareRenderer(TableCellRenderer renderer, int row, int column)
row
, column
.
Returns the component (may be a Component
or a JComponent
) under the event location.
During a printing operation, this method will configure the
renderer without indicating selection or focus, to prevent
them from appearing in the printed output. To do other
customizations based on whether or not the table is being
printed, you can check the value of
JComponent.isPaintingForPrint()
, either here
or within custom renderers.
Note: Throughout the table package, the internal implementations always use this method to prepare renderers so that this default behavior can be safely overridden by a subclass.
renderer
- the TableCellRenderer
to preparerow
- the row of the cell to render, where 0 is the first rowcolumn
- the column of the cell to render,
where 0 is the first columnComponent
under the event locationpublic TableCellEditor getCellEditor(int row, int column)
row
and column
. If the
TableColumn
for this column has a non-null editor,
returns that. If not, finds the class of the data in this
column (using getColumnClass
)
and returns the default editor for this type of data.
Note: Throughout the table package, the internal implementations always use this method to provide editors so that this default behavior can be safely overridden by a subclass.
row
- the row of the cell to edit, where 0 is the first rowcolumn
- the column of the cell to edit,
where 0 is the first columnnull
return the default editor for
this type of cellDefaultCellEditor
public Component prepareEditor(TableCellEditor editor, int row, int column)
row
, column
.
Note: Throughout the table package, the internal implementations always use this method to prepare editors so that this default behavior can be safely overridden by a subclass.
editor
- the TableCellEditor
to set uprow
- the row of the cell to edit,
where 0 is the first rowcolumn
- the column of the cell to edit,
where 0 is the first columnComponent
being editedpublic void removeEditor()
protected String paramString()
null
.paramString
in class JComponent
public boolean print() throws PrinterException
JTable
in mode PrintMode.FIT_WIDTH
,
with no header or footer text. A modal progress dialog, with an abort
option, will be shown for the duration of printing.
Note: In headless mode, no dialogs are shown and printing occurs on the default printer.
SecurityException
- if this thread is not allowed to
initiate a print job requestPrinterException
- if an error in the print system causes the job
to be abortedprint(JTable.PrintMode, MessageFormat, MessageFormat,
boolean, PrintRequestAttributeSet, boolean, PrintService)
,
getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
public boolean print(JTable.PrintMode printMode) throws PrinterException
JTable
in the given printing mode,
with no header or footer text. A modal progress dialog, with an abort
option, will be shown for the duration of printing.
Note: In headless mode, no dialogs are shown and printing occurs on the default printer.
printMode
- the printing mode that the printable should useSecurityException
- if this thread is not allowed to
initiate a print job requestPrinterException
- if an error in the print system causes the job
to be abortedprint(JTable.PrintMode, MessageFormat, MessageFormat,
boolean, PrintRequestAttributeSet, boolean, PrintService)
,
getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
public boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat) throws PrinterException
JTable
in the given printing mode,
with the specified header and footer text. A modal progress dialog,
with an abort option, will be shown for the duration of printing.
Note: In headless mode, no dialogs are shown and printing occurs on the default printer.
printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text
to be used in printing a header,
or null for nonefooterFormat
- a MessageFormat
specifying the text
to be used in printing a footer,
or null for noneSecurityException
- if this thread is not allowed to
initiate a print job requestPrinterException
- if an error in the print system causes the job
to be abortedprint(JTable.PrintMode, MessageFormat, MessageFormat,
boolean, PrintRequestAttributeSet, boolean, PrintService)
,
getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
public boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat, boolean showPrintDialog, PrintRequestAttributeSet attr, boolean interactive) throws PrinterException, HeadlessException
print
method, with the default printer specified as the print service.printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text
to be used in printing a header,
or null
for nonefooterFormat
- a MessageFormat
specifying the text
to be used in printing a footer,
or null
for noneshowPrintDialog
- whether or not to display a print dialogattr
- a PrintRequestAttributeSet
specifying any printing attributes,
or null
for noneinteractive
- whether or not to print in an interactive modeHeadlessException
- if the method is asked to show a printing
dialog or run interactively, and
GraphicsEnvironment.isHeadless
returns true
SecurityException
- if this thread is not allowed to
initiate a print job requestPrinterException
- if an error in the print system causes the job
to be abortedprint(JTable.PrintMode, MessageFormat, MessageFormat,
boolean, PrintRequestAttributeSet, boolean, PrintService)
,
getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
public boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat, boolean showPrintDialog, PrintRequestAttributeSet attr, boolean interactive, PrintService service) throws PrinterException, HeadlessException
JTable
. Takes steps that the majority of
developers would take in order to print a JTable
.
In short, it prepares the table, calls getPrintable
to
fetch an appropriate Printable
, and then sends it to the
printer.
A boolean
parameter allows you to specify whether or not
a printing dialog is displayed to the user. When it is, the user may
use the dialog to change the destination printer or printing attributes,
or even to cancel the print. Another two parameters allow for a
PrintService
and printing attributes to be specified.
These parameters can be used either to provide initial values for the
print dialog, or to specify values when the dialog is not shown.
A second boolean
parameter allows you to specify whether
or not to perform printing in an interactive mode. If true
,
a modal progress dialog, with an abort option, is displayed for the
duration of printing . This dialog also prevents any user action which
may affect the table. However, it can not prevent the table from being
modified by code (for example, another thread that posts updates using
SwingUtilities.invokeLater
). It is therefore the
responsibility of the developer to ensure that no other code modifies
the table in any way during printing (invalid modifications include
changes in: size, renderers, or underlying data). Printing behavior is
undefined when the table is changed during printing.
If false
is specified for this parameter, no dialog will
be displayed and printing will begin immediately on the event-dispatch
thread. This blocks any other events, including repaints, from being
processed until printing is complete. Although this effectively prevents
the table from being changed, it doesn't provide a good user experience.
For this reason, specifying false
is only recommended when
printing from an application with no visible GUI.
Note: Attempting to show the printing dialog or run interactively, while
in headless mode, will result in a HeadlessException
.
Before fetching the printable, this method will gracefully terminate
editing, if necessary, to prevent an editor from showing in the printed
result. Additionally, JTable
will prepare its renderers
during printing such that selection and focus are not indicated.
As far as customizing further how the table looks in the printout,
developers can provide custom renderers or paint code that conditionalize
on the value of JComponent.isPaintingForPrint()
.
See getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
for more description on how the table is
printed.
printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text
to be used in printing a header,
or null
for nonefooterFormat
- a MessageFormat
specifying the text
to be used in printing a footer,
or null
for noneshowPrintDialog
- whether or not to display a print dialogattr
- a PrintRequestAttributeSet
specifying any printing attributes,
or null
for noneinteractive
- whether or not to print in an interactive modeservice
- the destination PrintService
,
or null
to use the default printerHeadlessException
- if the method is asked to show a printing
dialog or run interactively, and
GraphicsEnvironment.isHeadless
returns true
SecurityException
- if a security manager exists and its
SecurityManager.checkPrintJobAccess()
method disallows this thread from creating a print job requestPrinterException
- if an error in the print system causes the job
to be abortedgetPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
,
GraphicsEnvironment.isHeadless()
public Printable getPrintable(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat)
Printable
for use in printing this JTable.
This method is meant for those wishing to customize the default
Printable
implementation used by JTable
's
print
methods. Developers wanting simply to print the table
should use one of those methods directly.
The Printable
can be requested in one of two printing modes.
In both modes, it spreads table rows naturally in sequence across
multiple pages, fitting as many rows as possible per page.
PrintMode.NORMAL
specifies that the table be
printed at its current size. In this mode, there may be a need to spread
columns across pages in a similar manner to that of the rows. When the
need arises, columns are distributed in an order consistent with the
table's ComponentOrientation
.
PrintMode.FIT_WIDTH
specifies that the output be
scaled smaller, if necessary, to fit the table's entire width
(and thereby all columns) on each page. Width and height are scaled
equally, maintaining the aspect ratio of the output.
The Printable
heads the portion of table on each page
with the appropriate section from the table's JTableHeader
,
if it has one.
Header and footer text can be added to the output by providing
MessageFormat
arguments. The printing code requests
Strings from the formats, providing a single item which may be included
in the formatted string: an Integer
representing the current
page number.
You are encouraged to read the documentation for
MessageFormat
as some characters, such as single-quote,
are special and need to be escaped.
Here's an example of creating a MessageFormat
that can be
used to print "Duke's Table: Page - " and the current page number:
// notice the escaping of the single quote // notice how the page number is included with "{0}" MessageFormat format = new MessageFormat("Duke''s Table: Page - {0}");
The Printable
constrains what it draws to the printable
area of each page that it prints. Under certain circumstances, it may
find it impossible to fit all of a page's content into that area. In
these cases the output may be clipped, but the implementation
makes an effort to do something reasonable. Here are a few situations
where this is known to occur, and how they may be handled by this
particular implementation:
ComponentOrientation
.
PrintMode.NORMAL
when a column
is too wide to fit in the printable area -- print the center
portion of the column and leave the left and right borders
off the table.
It is entirely valid for this Printable
to be wrapped
inside another in order to create complex reports and documents. You may
even request that different pages be rendered into different sized
printable areas. The implementation must be prepared to handle this
(possibly by doing its layout calculations on the fly). However,
providing different heights to each page will likely not work well
with PrintMode.NORMAL
when it has to spread columns
across pages.
As far as customizing how the table looks in the printed result,
JTable
itself will take care of hiding the selection
and focus during printing. For additional customizations, your
renderers or painting code can customize the look based on the value
of JComponent.isPaintingForPrint()
Also, before calling this method you may wish to first
modify the state of the table, such as to cancel cell editing or
have the user size the table appropriately. However, you must not
modify the state of the table after this Printable
has been fetched (invalid modifications include changes in size or
underlying data). The behavior of the returned Printable
is undefined once the table has been changed.
printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text to
be used in printing a header, or null for nonefooterFormat
- a MessageFormat
specifying the text to
be used in printing a footer, or null for nonePrintable
for printing this JTableprint(JTable.PrintMode, MessageFormat, MessageFormat,
boolean, PrintRequestAttributeSet, boolean)
,
Printable
,
PrinterJob
public AccessibleContext getAccessibleContext()
getAccessibleContext
in interface Accessible
getAccessibleContext
in class JComponent
Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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