With this code javax.swing.JPopupMenu lw = new javax.swing.JPopupMenu();
lw.setVisible(true);

I get the following:

  !! FAIL: javax.swing.JPopupMenu: do_setVisible_2 status=fail with exception=java.lang.NullPointerException
java.lang.NullPointerException
        at javax.swing.JPopupMenu.getPopup(JPopupMenu.java:733)
        at javax.swing.JPopupMenu.setVisible(JPopupMenu.java:683)
        at javax_swing_JPopupMenu.do_setVisible_2(javax_swing_JPopupMenu.java:78)
        at javax_swing_JPopupMenu.run(javax_swing_JPopupMenu.java:3510)
        at java.lang.Thread.run(Thread.java:579)

Nowhere is Component.setVisible nor JPopupMenu.setVisible documented
to throw any exceptions.

Solaris 8 (sparc), JDK 1.4 build 46

--- begin - test.java-----

import javax.swing.JPopupMenu;

public class test {
public static void main(String[] args) {
JPopupMenu menu = new JPopupMenu();
menu.setVisible(true);
}
}
--- end - test.java ----

Execute in headless mode:

% java -Djava.awt.headless=true test
mark.davidson@Eng 2001-01-19