Java

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.lang.refs and java.lang.reflect packages provide, respectively, reference-object classes and APIs for obtaining reflective information about classes.

The java.util.* packages provide support for the event model, collections framework, date and time facilities, and contain 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, and the java.util.prefs package implements the Preferences API.

Guides

Enhancements

Each version of the Java platform has offered enhancements in the java.lang and java.util.* packages:

API Specifications


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