Packages
| java.io |
Provides for system input and output through data streams,
serialization and the file system. |
| java.net |
Provides the classes for implementing networking applications. |
| java.nio |
Defines buffers, which are containers for data, and provides an
overview of the other NIO packages. |
| java.nio.channels |
Defines channels, which represent connections to entities that are capable of
performing I/O operations, such as files and sockets; defines selectors, for
multiplexed, non-blocking I/O operations. |
| java.nio.channels.spi |
Service-provider classes for the java.nio.channels package. |
| java.nio.file |
Defines interfaces and classes for the Java virtual machine to access files,
file attributes, and file systems. |
| java.nio.file.attribute |
Interfaces and classes providing access to file and file system attributes. |
| java.nio.file.spi |
Service-provider classes for the java.nio.file package. |
| java.util |
Contains the collections framework, legacy collection classes, event model,
date and time facilities, internationalization, and miscellaneous utility
classes (a string tokenizer, a random-number generator, and a bit array). |