The Windows releases of Java Plug-in and Java Web Start make use
of the codebase attribute of the OBJECT
element to autodownload and install a particular version of the
JRE. See:
By specifying a particular .cab file in the
codebase, a particular version of the JRE can be
automatically downloaded and installed as required by an applet or
application. For a list of the available .cab files,
see
Autodownload Files. Note that not every release of the JRE has
an associated .cab file for autodownload.
For additional information read the technical article on Auto Install.
