JAVA API:

   Java Standard Library (or API) contains hundreds of classes and methods grouped into several functional packages. Most commonly used packages are:

o   Language Support Package: A collection of classes and methods required for implementing basic features of java.

o   Utility Package: A collection of classes to provide utility functions such as date and time functions.

o   Input/output Package: A collection of classes used for input/output manipulation.

o   Networking Package: A collection of classes for communicating with other computers via Internet.

o   AWT Package: The Abstract Window Toolkit Package contains classes that implements platform independent GUI.

o   Applet Package:This includes classes that allow us to create Java applets.