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JDK Development Kit 21.0.4 downloads. JDK 21 binaries are free to use in production and free to redistribute, at no cost, under the Oracle No-Fee Terms and Conditions (NFTC). JDK 21 will receive updates under the NFTC, until September 2026, a year after the release of the next LTS.
Go to the Oracle Java Archive page. The JDK is a development environment for building applications using the Java programming language. The JDK includes tools useful for developing and testing programs written in the Java programming language and running on the Java TM platform. WARNING: Older versions of the JDK are provided to help developers ...
For production use Oracle recommends downloading the latest JDK version. Only developers and enterprise administrators should download these releases. For current Java releases, please visit Oracle Java SE Downloads.
Thank you for downloading this release of the Java Platform, Standard Edition Development Kit (JDK). The JDK is a development environment for building applications and components using the Java programming language.
You can install the JDK by downloading the appropriate Oracle JDK MSI Enterprise Installer for your system and running it from the command line. Download jdk-21 _windows-x64_bin.msi. Open an MS-DOS prompt with Administrative permissions.
From either the browser Downloads window or from the file browser, double-click the .dmg file to start it. A Finder window appears that contains an icon of an open box and the name of the .pkg file. Double-click the JDK 21.pkg icon to start the installation application.
This software is licensed under the Java SE Development Kit 21 Documentation License Agreement.
JDK Development Kit 21.0.4 downloads. JDK 21 binaries are free to use in production and free to redistribute, at no cost, under the Oracle No-Fee Terms and Conditions (NFTC). JDK 21 will receive updates under the NFTC, until September 2026, a year after the release of the next LTS.
This document describes the process to install Oracle JDK 21 on Windows, macOS, and Linux platforms.
The documentation for JDK 21 includes developer guides, API documentation, and release notes.