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Download Java SE Runtime Environment 8u421

Java SE downloads are available through your Oracle Account.

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Available Platforms

Java SE Runtime Environment 8u421 is available for the following platforms. Downloads are available through your Oracle Account or through your system administrator for enterprise deployments.

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Windows x64

Installer · 68.4 MB

Includes javax.exe v2.4.1

macOS

DMG Installer · 74.1 MB

Includes javax v2.4.1

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Linux x64

RPM / tar.gz · 62.8 MB

Includes javax v2.4.1

To obtain Java SE downloads, sign in to your Oracle Account or contact your system administrator for enterprise deployment packages. Use of Java SE is subject to the Oracle Technology Network License Agreement.

About This Release

Java SE Runtime Environment 8u421 is a Critical Patch Update (CPU) release that includes important security fixes and bug corrections.

Java SE 8u421 is available for Windows (x64), macOS, and Linux (x64) platforms. The JRE requires a minimum of 128 MB RAM and 180 MB of available disk space.

For installation guidance, refer to the Java SE documentation or contact Oracle Support. For enterprise deployments, contact your system administrator for deployment packages and configuration details.