Java Runtime Environment for Mac (JRE for Mac) allows you to play online games, chat with people around the world, calculate your mortgage interest, and view images in 3D, just to name a few. It's also integral to the intranet applications and other e-business. For Mac OS X 10.6 and below, use the Software Update feature (available on the Apple menu) to check that you have the most up-to-date version of Java 6 for your Mac. For issues related to Apple Java 6 on Mac, contact Apple Support. Oracle and Java.com only support Java 7 and later, and only on 64 bit systems. Mac OS X and Apple Java 6 End of Life.
Latest Version:
Requirements:
Mac OS X
Author / Product:
Oracle / Java Development Kit for Mac
Old Versions:
Filename:
jdk-8u121-macosx-x64.dmg
MD5 Checksum:
053951fc1fa47569ff42a99d147cfa07
Java Development Kit for macOS (often described by Oracle as an “extended” package that expands upon the normal tools that could be find in Java SE Development Kit) hosts wide variety of tools for streamlined developing, debugging, testing, and monitoring of Java applications. The core of the package consists from more than 30 individual tools and service which can effortlessly control every aspect of Java application development, from the concept phase to the final deployment to the end-users.
Contents of the JDK:
Development Tools
(In the bin/ subdirectory) Tools and utilities that will help you develop, execute, debug, and document programs written in the JavaTM programming language.
Runtime Environment
(In the jre/ subdirectory) An implementation of the Java Runtime Environment (JRE) for use by the JDK. The JRE includes a Java Virtual Machine (JVM), class libraries, and other files that support the execution of programs written in the Java programming language.
Additional Libraries
(In the lib/ subdirectory) Additional class libraries and support files required by the development tools.
Demo Applets and Applications
(In the demo/ subdirectory) Examples, with source code, of programming for the Javaplatform. These include examples that use Swing and other Java Foundation Classes, and the Java Platform Debugger Architecture.
Sample Code
(In the sample subdirectory) Samples, with source code, of programming for certain Java API's.
C header Files
(In the include/ subdirectory) Header files that support native-code programming using the Java Native Interface, the JVM Tool Interface, and other functionality of the Javaplatform.
Source Code
(In src.zip) Java programming language source files for all classes that make up the Java core API (that is, sources files for the java.*, javax.* and some org.* packages, but not for com.sun.* packages). This source code is provided for informational purposes only, to help developers learn and use the Java programming language. These files do not include platform-specific implementation code and cannot be used to rebuild the class libraries. To extract these file, use any common zip utility. Or, you may use the Jar utility in the JDK's bin/ directory: jar xvf src.zip. Download Java Development Kit for Mac now!
Also Available: Download Java Development Kit for Windows
This topic includes the following sections:
System Requirements for Installing the JDK on macOS
The following are the system requirements for installing the JDK on macOS:
Any Intel-based computer running macOS.
Administrator privileges.
You cannot install Java for a single user. Installing the JDK on macOS is performed on a systemwide basis for all users. Administrator privileges are required to install the JDK on macOS.
Determining the Default JDK Version on macOS
When starting a Java application through the command line, the system uses the default JDK.
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You can determine which version of the JDK is the default by entering java -version
in a Terminal window. If the installed version is 12 Interim 0, Update 0, and Patch 0, then you see a string that includes the text 12
. For example:
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To run a different version of Java, either specify the full path, or use the java_home
tool. For example:
$ /usr/libexec/java_home -v 12 --exec javac -version
Installing the JDK on macOS
- Download the JDK
.dmg
file,jdk-12.
interim.update.patch-macosx-x64.dmg
.Before the file can be downloaded, you must accept the license agreement.
- 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 12.pkg
icon to start the installation application.The installation application displays the Introduction window. - Click Continue.
- Click Install. A window appears that displays the message: Installer is trying to install new software. Enter your password to allow this.
- Enter the Administrator user name and password and click Install Software.The software is installed and a confirmation window is displayed.
.dmg
file if you want to save disk space. Mac Os X Versions
Uninstalling the JDK on macOS
You must have Administrator privileges.Note:
Do not attempt to uninstall Java by removing the Java tools from /usr/bin
. This directory is part of the system software and any changes will be reset by Apple the next time that you perform an update of the OS.
- Go to
/Library/Java/JavaVirtualMachines
. - Remove the directory whose name matches the following format by executing the
rm
command as a root user or by using thesudo
tool:/Library/Java/JavaVirtualMachines/jdk-interim.update.patch.jdk
For example, to uninstall 12 Interim 0 Update 0 Patch 0:
$ rm -rf jdk-12.jdk
Installation FAQ on macOS Platform
This topic provides answers for the following frequently asked questions about installing JDK on macOS computers.
1. How do I find out which version of Java is the system default?
When you run a Java application from the command line, it uses the default JDK. If you do not develop Java applications, then you do not need to worry about this. See Determining the Default JDK Version on macOS.
2. How do I uninstall Java?
See Uninstalling the JDK on macOS.
3. After installing Java for macOS 2012-006, can I continue to use Apple's Java 6 alongside the macOS JDK for Java 12?
If you want to continue to develop with Java 6 using command-line, then you can modify the startup script for your favorite command environment. For bash, use this:
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$ export JAVA_HOME=`/usr/libexec/java_home -v 12`
Some applications use /usr/bin/java
to call Java. After installing Java for macOS 2012-006, /usr/bin/java
will find the newest JDK installed, and will use that for all of the Java-related command-line tools in /usr/bin
. You may need to modify those applications to find Java 6, or contact the developer for a newer version of the application.
4. Can I restore Apple Java after uninstalling Oracle Java?
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Go back to Apple Java using the following instructions:
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Uninstall Oracle Java by deleting the plug-in file. From a command-line, enter:
$ sudo rm -rf '/Library/Internet Plug-Ins/JavaAppletPlugin.plugin'
Create a symlink using the following command, entered on a single line:
$ sudo ln -s /System/Library/Java/Support/CoreDeploy.bundle/Contents/JavaAppletPlugin.plugin '/Library/Internet Plug-Ins/JavaAppletPlugin.plugin'
5. What happened to the Java Preferences app in Application Utilities?
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The Java Preferences app was part of the Apple Java installation and is not used by Oracle Java. Therefore, macOS releases from Apple that do not include Apple Java will not include Java Preferences.