Start SUN Java WorkShop by running
jwsos2.cmd in the \jws\os2\bin directory

Remember to set JAVA_HOME to your JAVAOS2 directory.
(This can also be done directly in the JWSOS2.CMD file or in your config.sys)
Ex: 'SET JAVA_HOME=C:\JAVAOS2' if you insert into the JWSOS2.CMD file.

Thanks to Cristiano Guadagnino for the JWSOS2 script.