Java packets

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Types of packages:
Built-in Packages
These packages consist of a large number of classes which are a part of Java API.Some of the commonly used built-in packages are:

1) java.lang: Contains language support classes(e.g classed which defines primitive data types, math operations). This package is automatically imported.

2)  java.io: Contains classed for supporting input / output operations.

3)  java.util: Contains utility classes which implement data structures like Linked List, Dictionary and support ; for Date / Time operations.

4)  java.applet: Contains classes for creating Applets.

5)  java.awt: Contain classes for implementing the components for graphical user interfaces (like button , ;menus etc).

6)  java.net: Contain classes for supporting networking operations.

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