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1. JmenuItem mouse pressed work but mouse clicked event does not work? why?    stackoverflow.com

I was trying to create a mouse clicked event of a JmenuItem but it did not work but mouse pressed event works. what is the difference between clicked and pressed and ...

2. JMenu pressed throws exception    stackoverflow.com

In my app when i press Edit in my JMenuBar i receive 

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at sun.swing.SwingUtilities2.getLeftSideBearing(SwingUtilities2.java:241)
    at sun.swing.MenuItemLayoutHelper.getLeftExtraWidth(MenuItemLayoutHelper.java:162)
    at ...

3. Activate menu by pressing button on panel.    coderanch.com

4. press leftclick and a menu appers    coderanch.com

hi all i want to have a menu that appers when i press left click on a textpane ... but how can i do it ..i can add it in the menubar easily but i wat to click(left click on the textpane then the menu appers on the pane (not on the menu bar) how to do this??

5. Cant change selected/pressed Icon of a JMenu    java-forums.org

6. Execute .bat file when I press jMenuItem    java-forums.org

7. JMenuItem press method    forums.oracle.com