False alarm. I was clicking Run, instead of "Build and Run"
I tried to make a Java tool with Project Builder.
Even trying to compile the default tool I get the following build error:
Exception in thread "main" java.util.zip.ZipException: No such file or directory
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:112)
at java.util.jar.JarFile.<init>(JarFile.java:117)
at java.util.jar.JarFile.<init>(JarFile.java:55)
java has exited with status 1.
Any ideas? I'm using the Dec 2002 dev tools with Java 1.4.1