Java Package - Core Packages in Java SE 6

Core Packages in Java SE 6

java.lang — basic language functionality and fundamental types
java.util — collection data structure classes
java.io — file operations
java.math — multiprecision arithmetics
java.nio — the New I/O framework for Java
java.net — networking operations, sockets, DNS lookups, ...
java.security — key generation, encryption and decryption
java.sql — Java Database Connectivity (JDBC) to access databases
java.awt — basic hierarchy of packages for native GUI components
javax.swing — hierarchy of packages for platform-independent rich GUI components
java.applet — classes for creating an applet

The java.lang package is available without the use of an import statement.

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