Strange behaviour in swing

[cbalu]

Hi folks,
Today i noticed two strange behaviour in swing.
Case 1: Normally for every key events we used to get one keyPress and one keyRelease events.But this is not of the case with PrintScreen key. I tested this behaviour on the JNLP file used in java tutorial at this link itself.

Question: Why only PrintScreen has this kind of event associated with it?

Case 2: One more thing is that whenever we create a JMenu component on the JFrame we are able to access this menu by Left-Clicking on the JMenu component but accidentally i made a right click on the JMenu and that too populates the JMenu.

Question: How can i restrict Right-Clicking on the JMenu Component?

Image for your reference
1.JNLP file under my PC


Can anybody help????

[hardwired]

How can i restrict Right-Clicking on the JMenu Component?
SwingUtilities has handy methods such as isRightMouseButton