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Thread: Icons not visable?

  1. #1
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    Exclamation Icons not visable?

    I'm making it so that users can switch the theme of the icons for the JOptionPane (java defult, windows defult, and a custom one). the method works fine inside the class its declared in but when calling it outside of the class I'm getting this error:

    Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
            at GUI.setImageIcon(GUI.java:286)
            at Updater.checkForUpdates(Updater.java:28)
            at GUI.actionPerformed(GUI.java:172)
            at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
            at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
            at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
            at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
            at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Sour
    ce)
            at java.awt.Component.processMouseEvent(Unknown Source)
            at javax.swing.JComponent.processMouseEvent(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.LightweightDispatcher.retargetMouseEvent(Unknown Source)
            at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
            at java.awt.LightweightDispatcher.dispatchEvent(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)

    The method setImageIcon if defined in the class GUI. here it is:

    public ImageIcon setImageIcon(String iconSet) {
    		ImageIcon iconType = null;
    		if (iconStyle.equals("Emotocons")) {
    			if (iconSet.equals("inform")) {
    				iconType = happyface;
    			}
    			if (iconSet.equals("error")) {
    				iconType = angryface;
    			}
    			if (iconSet.equals("warning")) {
    				iconType = anotherface;
    			}
    		}
     
    		if (iconStyle.equals("java_defult")) {
    			if (iconSet.equals("inform")) {
    				iconType = javaInfo;
    			}
    			if (iconSet.equals("error")) {
    				iconType = javaError;
    			}
    			if (iconSet.equals("warning")) {
    				iconType = javaWarning;
    			}
    		}
     
    		if (iconStyle.equals("windows_defult")) {
    			if (iconSet.equals("inform")) {
    				iconType = windowsInfo;
    			}
    			if (iconSet.equals("error")) {
    				iconType = windowsError;
    			}
    			if (iconSet.equals("warning")) {
    				iconType = windowsWarning;
    			}
    		}
     
    		return iconType;
    	}

    Now when I call that outside of the class GUI is when i get there error. I'm calling it in the class Updater. here it is:

    if (command.equalsIgnoreCase("update")) {
    			JOptionPane.showMessageDialog(null, "There is a more recent version. " +
    					"\nPlease download it on the website!", "Free RS Membership Updater", JOptionPane.WARNING_MESSAGE, g.setImageIcon("warning"));
    		} else {
    			JOptionPane.showMessageDialog(null, "You have the most recent version!", 
    					"Free RS Membership Updater", JOptionPane.INFORMATION_MESSAGE, g.setImageIcon("inform"));
    		}

    I did try this before and it said I didnt have the icons set visible but I rewrote the method since then and now I cant seem to get it to work.. please help!
    Last edited by frozen java; November 12th, 2011 at 02:44 AM. Reason: fixed


  2. #2
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    Default Re: Icons not visable?

    i fixed it

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