Adding to the classpath on OSX

Solution 1:

If you want to make a certain set of JAR files (or .class files) available to every Java application on the machine, then your best bet is to add those files to /Library/Java/Extensions.

Or, if you want to do it for every Java application, but only when your Mac OS X account runs them, then use ~/Library/Java/Extensions instead.

EDIT: If you want to do this only for a particular application, as Thorbjørn asked, then you will need to tell us more about how the application is packaged.

Solution 2:

In OSX, you can set the classpath from scratch like this:

export CLASSPATH=/path/to/some.jar:/path/to/some/other.jar

Or you can add to the existing classpath like this:

export CLASSPATH=$CLASSPATH:/path/to/some.jar:/path/to/some/other.jar

This is answering your exact question, I'm not saying it's the right or wrong thing to do; I'll leave that for others to comment upon.

Solution 3:

To specify a classpath for a single Java process, you can add a classpath option when you run the Java command.

In you command line. Use java -cp "path/to/your/jar:." main rather than just java main

The option tells Java where to search for libraries.