Build 3.6 RC2 (showstopper)

Install NetBeans on machine with JDK 1.3.1_07 (or
older) only.
When you go to the J2SE Selection Panel, it is
skipped and redirected to the Directory Selection
Panel. As a result you can install NetBeans on a
machine with no valid J2SDK. There's "null"
parameter in the JDKHOME variable in ide.cfg.

REASON:
It is caused by using 1.4 swing method:
javax.swing.JComponent.requestFocusInWindow
in class JDKSelectionPanel, line 206.
Using unsupported method requestFocusInWindow
throws exception which is caught and ignored.

SOLUTION:
1) Exclude 1.3.x JVMs from supported JVM list in
ISMP project.
2) Catch this error and ignore it on a higher
level and/or provide alternative 1.3.x code.

I'd prefer (2), but it depends on fix complexity
and other possible code breaks.