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JDK 9 Documentation

The Java Platform, Standard Edition 9 Development Kit (JDK 9) is a feature release of the Java SE platform. It contains new features and enhancements in many functional areas.

You can use the links on this page to open What’s New in JDK 9 as well as the Release Notes documents. The What’s New in JDK 9 document describes important new features in JDK 9. The Release Notes documents describe important changes, enhancements, removed APIs and features, deprecated APIs and features, and other information about JDK 9 and Java SE 9.

Links to other sources of information about JDK 9 are also provided. The JDK 9 Migration Guide link is provided on this page in the JDK 9 Guides and Reference Documentation group. This document is of particular interest to users moving from previous versions of the JDK. It provides important information about specific compatibility issues as well as new features that you might encounter when moving to JDK 9. Links to the JDK 9 API Specification and the Java Language and Virtual Machine Specifications are provided on this page in the JDK 9 Specifications group.

Note: The Release Notes files are located only on our website.