I just did it. I created a new folder private\javalab and there it is. Thank you!
To test it, you can throw out everything from the menu except the input_output item with the subitems
(you find the menu in javalab\system\startup\menubar.rc), since I can rewrite all these programs for JDK 1.2.2.
But don't let it ruin your day!
If it won't work I'll have to think of something else!