Built-in Packages in Java || Java Packages

Packages in Java

• java.lang package  

• java.io package

• java.util package

• java.applet package

• java.awt package

• java.net package

   

java.lang package  

java.lang package contains language support classes ( for e.g classes which defines primitive data types, math operations, etc.) . This package is automatically imported.

java.io package

java.io package contains classes for supporting input / output operations.

java.util package

java.util package contains utility classes which implement data structures like Linked List, Hash Table, Dictionary, etc and support for Date / Time operations.

java.applet package

java.applet package contains classes for creating Applets.

java.awt package

javav.awt package contains classes for implementing the components of graphical user interface ( like buttons, menus, etc. ).

java.net package

java.net package contains classes for supporting networking operations.