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4 Replies Latest reply: Dec 7, 2012 11:24 PM by EJP RSS

How to call a class from a method?

978658 Newbie
Currently Being Moderated
Please explain it completely ok?
  • 1. Re: How to call a class from a method?
    EJP Guru
    Currently Being Moderated
    How to call a class from a method?
    There is no such operation as 'call a class'. You can only call methods.
    Please explain it completely
    There is nothing here to explain.
    ok?
    No, it's not OK, it's just a meaningless question.
  • 2. Re: How to call a class from a method?
    978658 Newbie
    Currently Being Moderated
    Why did my program show part of the output I wanted it to show but some time it could perfectly give me the output that I wanted it to show?
    Why do I get blank screen after I call my frame_baru class?
    Why do I get these error messages?

    Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
         at prgtesisserver.frame_baru.<init>(ProgramTesisBaru.java:769)
         at prgtesisserver.ProgramTesisBaru$1.lanjut(ProgramTesisBaru.java:101)
         at prgtesisserver.ProgramTesisBaru$1.actionPerformed(ProgramTesisBaru.java:98)
         at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
         at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
         at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
         at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
         at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
         at java.awt.Component.processMouseEvent(Component.java:6504)
         at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
         at java.awt.Component.processEvent(Component.java:6269)
         at java.awt.Container.processEvent(Container.java:2229)
         at java.awt.Component.dispatchEventImpl(Component.java:4860)
         at java.awt.Container.dispatchEventImpl(Container.java:2287)
         at java.awt.Component.dispatchEvent(Component.java:4686)
         at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
         at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
         at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
         at java.awt.Container.dispatchEventImpl(Container.java:2273)
         at java.awt.Window.dispatchEventImpl(Window.java:2713)
         at java.awt.Component.dispatchEvent(Component.java:4686)
         at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707)
         at java.awt.EventQueue.access$000(EventQueue.java:101)
         at java.awt.EventQueue$3.run(EventQueue.java:666)
         at java.awt.EventQueue$3.run(EventQueue.java:664)
         at java.security.AccessController.doPrivileged(Native Method)
         at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
         at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
         at java.awt.EventQueue$4.run(EventQueue.java:680)
         at java.awt.EventQueue$4.run(EventQueue.java:678)
         at java.security.AccessController.doPrivileged(Native Method)
         at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
         at java.awt.EventQueue.dispatchEvent(EventQueue.java:677)
         at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
         at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
         at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
         at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
         at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

    Edited by: 975655 on Dec 7, 2012 6:14 PM
  • 3. Re: How to call a class from a method?
    rp0428 Guru
    Currently Being Moderated
    >
    Why did my program show part of the output I wanted it to show but some time it could perfectly give me the output that I wanted it to show?
    >
    What does the third button from the right on my digital camera do?

    Please explain it completely ok?

    Once I have your answer I will be able to think clearly and try to help with your question.

    Oops! I mispoke. I would actually need to be able to SEE your code in order to know what it is doing.

    Sorry, no code no help possible.
  • 4. Re: How to call a class from a method?
    EJP Guru
    Currently Being Moderated
    Moderator action: locking your pointless thread.

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