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Goals

Pass all appropriate certification tests for Java SE 7
Include a complete, native Cocoa-based UI Toolkit
- DONE
Provide excellent performance
Integrate into main-line OpenJDK 8
- DONE. Mac OS X is now 'just another platform' in OpenJDK 8

Minimum requirements to run

An Intel Mac
RAM: 2GB
Mac OS X 10.7.3

Note that only Mac OS X 10.7.3 and higher will be an Oracle-supported platform. It should continue to run on 10.6.8 + Java for Mac OS X 10.6 Update 6 but that is not guaranteed. As of 1-Jan-2012 there are no plans to introduce 10.7-only APIs into the codebase.

Prerequisites to build

Hardware: Any 64-bit capable Intel Mac
- RAM: 4GB
Minimum OS version: Mac OS X 10.7.3
Xcode: 4.1 or later from the Mac App Store (free download)

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Note

title	Xcode

If you install Xcode after installing the Apple provided Java for Mac OS X, you will have to re-install the same Java for Mac OS X or a later developer preview to correct headers in the JavaRuntimeSupport framework. This issue is expected to be resolved in a future release of Xcode.

As of Xcode version 4.3 you have to manually install the command line compilers and tools. Start Xcode, open Preferences, choose the Downloads tab, and then install "Command Line Tools".

1. Get the code

For JDK 7u

Code Block
hg clone http://hg.openjdk.java.net/jdk7u/jdk7u-dev cd jdk7u-dev chmod 755 get_source.sh ./get_source.sh

...

Code Block
hg clone http://hg.openjdk.java.net/jdk8/jdk8 cd jdk8 chmod 755 get_source.sh ./get_source.sh

2. Build

Set the LANG environment variable if it isn't set, then run make:

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* Steps for incremental building

3. Smoke Test

Code Block
build/macosx-universal/j2sdk-image/bin/java -version

4. Install

Code Block
mkdir -p ~/Library/Java/JavaVirtualMachines cp -R build/macosx-universal/j2sdk-bundle/jdk1.7.0.jdk ~/Library/Java/JavaVirtualMachines

5. Run

Code Block
export JAVA_HOME=`/usr/libexec/java_home --version 1.7` $JAVA_HOME/bin/java -version

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Code Block
$JAVA_HOME/bin/java -jar /Developer/Extras/Java/JFC/SwingSet2/SwingSet2.jar

6. Test

Download jtreg to run the tests in the /jdk/test directory.

Bugs!

File new bugs at http://bugreport.sun.com/bugreport/. Please check out the bug reporting guidelines if you haven't filed against the project before.

Questions?

Please join the macosx-port-dev mailing list and ask!

See something wrong on this page? Fix it!

Join the web-discuss@openjdk.java.net mailing list
Send an e-mail to the web-discuss@openjdk.java.net mailing list:
- Request editor rights to the "OpenJDK Mac OS X Port" wiki
- Include your Oracle SSO Username

TL;DR

Download an official or unofficial build
If you have /Applications/Utilities/Java Preferences.app:
1. Open it
2. Drag both "OpenJDK 7" entries to the top of the list
Run "java -version" in /Applications/Utilities/Terminal.app