Is there any expansion for JAVA??

Answer 1

What do you mean by expansion? Everything that you need for java you can find at http://www.sun.com .

Answer 2

Java is "expanded" in one of three ways:

Additions to the core APIs: each version of Java released may include new methods, classes, interfaces, packages, and even syntax and semantic changes! These are official and have been vetted through the Java Community Process (JCP).

Standard Extensions to the core APIs: these are additional libraries that are officially added, but may or may not be included with the core distributions. They have a javax.* package name and are also vetted through the JCP.

Third-party libraries: these are written by companies, organizations, and individuals and extend the core and extension APIs. These are not "official". Any one can write them. In a sense, any classes that you write fall into this category.