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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