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strange error

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C:\Users\Marko\Desktop\java>java rtype.RType
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at javax.swing.ImageIcon.<init>(Unknown Source)
        at rtype.Missile.<init>(Missile.java:21)
        at rtype.Craft.fire(Craft.java:106)
        at rtype.Craft.keyPressed(Craft.java:85)
        at rtype.Board$TAdapter.keyPressed(Board.java:228)
        at java.awt.Component.processKeyEvent(Unknown Source)
        at javax.swing.JComponent.processKeyEvent(Unknown Source)
        at java.awt.Component.processEvent(Unknown Source)
        at java.awt.Container.processEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)

        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Sour
ce)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Sour
ce)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Window.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
        at java.awt.EventQueue.access$000(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Sour
ce)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Sour
ce)
        at java.awt.EventQueue$4.run(Unknown Source)
        at java.awt.EventQueue$4.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Sour
ce)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)

I get this error when i pres space in my game. I had a major screwup, i accidentally deleted the orginal .java files, but i recreated them. But for somereason shooting stopped working. Each time when i press space i get this message in console.

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Make sure you don't pass null to the ImageIcon constructor.

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I see. i found the error. Grammar mistake in the .png file name :D

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Why not the image from a folder that contains a bunch of images? It would you are reading the image from a desktop.

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