How do I Determine the Correct JAVA_HOME Path in macOS X 10.6?

Determining the JAVA_HOME Environment Variable in macOS X 10.6

In macOS X 10.6, several potential paths can be used for the JAVA_HOME environment variable to specify the correct Java version and locate JRE JARs. To determine which one is appropriate, we can explore the available options and consider factors such as symlinks and current VM settings.

Valid JAVA_HOME Paths

Several valid paths for JAVA_HOME in macOS X 10.6 include:

• /Library/Java/Home
• /System/Library/Frameworks/JavaVM.framework/Home
• /System/Library/Frameworks/JavaVM.framework/Versions/Current

These are sometimes symlinked to the actual current VM, as indicated in the Java Preference pane.

Recommended Method

The recommended approach to set JAVA_HOME is to utilize the /usr/libexec/java_home command. This command returns the Java path specified in your Java preferences.

export JAVA_HOME=$(/usr/libexec/java_home)

This method ensures that the specified JAVA_HOME always points to the current Java version and avoids potential conflicts with older Java installations.

Alternative Method

If you need to specify an earlier version of Java, you can use the same command with the -v option, followed by the desired version number:

export JAVA_HOME=$(/usr/libexec/java_home -v 1.5)

For this method to work, ensure that the java_home command is available in your path. If not, create a symlink:

sudo ln -s /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java_home /usr/libexec/java_home

References

• [Oracle: java_home Command](https://docs.oracle.com/javase/7/docs/technotes/tools/windows/java.html#java_home)
• [MacOS Java Configuration for Spring Tool Suite](https://www.javacodegeeks.com/2019/03/macos-java-configuration-spring-tool-suite-eclipse-2019.html)

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