Java Reference
In-Depth Information
25.10.
javax.*
Standard Extensions
Standard extensions are packages or collections of packages that can
be downloaded to extend the capabilities of a particular virtual machine.
They will usually have names starting with
javax
, although future excep-
tions may be made. Conversely, packages with
javax
in the name may
become part of the main set of packages over time. For example, the
javax.swing
and
javax.accessibility
packages are part of the main set.
The name indicates that they were at first not part of the main set, but
integrated later.
Standard extensions are a mechanism that allows growth in the capabil-
ities of the platform without further extensions to the core packages re-
quired of all virtual machines. New standard extensions can be defined
and made available, but only installed where they are needed. Several
standard extensions are defined, and more are on the way. Listing them
all is far outside the scope of this topic you can find more information on
the Web, especially at
http://java.sun.com
.
