Java/Eclipse on MacOSX: where is the src.zip ?

Question

Hi,

With the latest Java update on MacOSX 10.6, Eclipse does not find the Java sources anymore.

I am not exactly sure (i.e. don't remember anymore) if I have downloaded the sources manually in the past and put them somewhere or if MacOSX provided them and Eclipse found them automatically.

Does MacOSX have the sources somewhere? (Please no assumptions here. I really want to know that.)

If not, where can I get them?

Answer 1

The src.zip is only available in the JDK, not in the JRE. In Mac OS X, it should be located in /System/Library/Frameworks/JavaVM.framework/Versions/Current/Home as src.jar.

Answer 2

On Mac OS X 10.5.8, after updating to Java 1.6.0_22 and installing the most recent developer update dated 20-Oct-2010, src.jar for Java 6 is not present.

$ find /System/Library/Java /System/Library/Frameworks -name src.jar
/System/Library/Frameworks/JavaVM.framework/Versions/1.4.2/Home/src.jar
/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/src.jar

Navigating to source in NetBeans 6.9.1 says compiled code for all constructors and methods, e.g. java.awt.Point:

public Point() {
    //compiled code
    throw new RuntimeException("Compiled Code");
}

It may be possible to extract a usable JAR from a previous update, as suggested in this thread.

Addendum: On NetBeans, the default platform's location is an attribute in the file ~/.netbeans/6.9/config/Services/Platforms/org-netbeans-api-java-Platform/default_platform.xml:

<sources>
    <resource>jar:file:/Library/Java/JavaVirtualMachines/
        1.6.0_22-b04-307.jdk/Contents/Home/src.jar!/src/
    </resource>
</sources>

Alternatively, the file /Library/Java/Home/src.jar may be referenced:

<sources>
    <resource>jar:file:/Library/Java/Home/src.jar!/src/</resource>
</sources>

Answer 3

After installing the most recent Java update you'll find src.jar under

/Library/Java/JavaVirtualMachines/1.6.0_22-b04-307.jdk/Contents/Home

That's where I pointed "JRE home" for Java 1.6 in Eclipse to. Everything works as expected (until now :)