How to setup JAVA_HOME on Mac OSX

25down voteaccepted

Does Snow Leopard still have /usr/libexec/java_home? On 10.5, I just set JAVA_HOME to the output of that command, which should give you the Java path specified in your Java preferences. Here's a snippet from my .bashrc file, which sets this variable: export JAVA_HOME=$(/usr/libexec/java_home) I haven't experienced any problems with that technique. (Occasionally I do have to change the value of JAVA_HOME to an earlier version of Java. For example, one program I'm maintaining requires 32-bit Java 5 on OS X, so when using that program, I setJAVA_HOME to /System/Library/Frameworks/JavaVM.framework/Versions/1.5/Home.) link|edit|flag answered Aug 28 '09 at 19:36 mipadi 36.8k35099

Snow Leopard does still have /usr/libexec/java_home. Thanks – Robert Christie Aug 28 '09 at 20:40

up vote2down vote	I tend to use /Library/Java/Home. The way the preferences pane works this should be up to date with your preferred version. link|edit|flag answered Aug 28 '09 at 19:23 Clint 2,598412

up vote1down vote

Also, it`s interesting to set your PATH to reflect the JDK. After adding JAVA_HOME (which can be done with the example cited by 'mipadi'): export JAVA_HOME=$(/usr/libexec/java_home) Add also in ~/.profile: export PATH=${JAVA_HOME}/bin:$PATH P.S.: For OSX, I generally use .profile in the HOME dir instead of .bashrc http://stackoverflow.com/questions/1348842/what-should-i-set-java-home-to-on-osx

Install Java 1.5 on Mac OSX

http://wiki.oneswarm.org/index.php/OS_X_10.6_Snow_Leopard

Snow Leopard Java problems (and fix)

Update: OneSwarm 0.6.7 is now available and fixes most Snow Leopard compatibility issues. Download here

The OneSwarm annonymous filesharing client version 0.6.5 does not run properly on Mac OS X 10.6 "Snow Leopard" because of compatibility issues between the 64 bit Java 6 VM and SWT, symptoms are:

• Connections will never handshake completely because packets sent by the user running 10.6 will not reach the network interface (except the initial ~20 byte handshake packet). Probable cause: not receiving write selects (?). Workaround below
• When double clicking on a torrent a window will pop up saying "file could not be opened".
• In the classic ui: Preferences will not show the values of the actual preferences, clicking in the box will cause the value to be shown.

Workaround for connection problem

In the terminal:

Get the java 5 that was included in 10.5 "leopard" and unpack

cd /tmp/ ;curl -o java.1.5.0-leopard.tar.gz http://www.cs.washington.edu/homes/isdal/snow_leopard_workaround/java.1.5.0-leopard.tar.gz ;tar -xvzf java.1.5.0-leopard.tar.gz 

Move it to your System java folder (password needed)

sudo mv 1.5.0 /System/Library/Frameworks/JavaVM.framework/Versions/1.5.0-leopard 

Tell OS X that java 5 actually is java 5

cd /System/Library/Frameworks/JavaVM.framework/Versions/ ;sudo rm 1.5.0 ;sudo ln -s 1.5.0-leopard 1.5.0 ;sudo rm 1.5 ;sudo ln -s 1.5.0 1.5 

Open Java Preferences

open "/Applications/Utilities/Java Preferences.app" 

Change the properties to use Java 5 32-bit by default: