| # The java.lang and java.util.* Packages | Documentation Contents

> The `java.lang` package provides classes that are fundamental to the design of the JavaTM programming language.

> The `java.util.*` packages provide support for the event model, collections framework, date and time facilities, and contains various utility classes. The `java.util.zip` and `java.util.jar` packages provide support for ZIP file format and Java Archive (JAR) file formats respectively.

## Enhancements

> Version 1.3 of the Java 2 SDK offers several enhancements in the `java.lang` and `java.util.*` packages. See Enhancements for details.

## API Specifications

- Package java.lang API Specification
- Package java.util API Specification
- Package java.util.jar API Specification
- Package java.util.zip API Specification

## Related Documentation

- The Collections Framework
- Package Java Archive (JAR) Features

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