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Thread: IconImage

  1. #1
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    Default IconImage

    Hi, I was wondering if any of you guys could figure out what is wrong with this line of code:

    try {
    frame.setIconImage(ImageIO.read(frame.getClass().getResource("C:\\Users\\John\\Downloads\\calcicon.ico")));
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    I can guarantee that the file location is right, so I'm not sure which part of it I'm doing wrong.

    Here is what the exception is:

     

    java.lang.IllegalArgumentException: input == null!
    at javax.imageio.ImageIO.read(Unknown Source)
    at JFrameClaculator.Calculator.createAndShowGUI(Calcu lator.java:524) //*
    at JFrameClaculator.Calculator.access$0(Calculator.ja va:63) //**
    at JFrameClaculator.Calculator$1.run(Calculator.java: 31) //***
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilter s(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(U nknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarch y(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)



    * = The line I mentioned above
    ** = private static void createAndShowGUI() {
    *** = createAndShowGUI();

  2. #2
    Administrator copeg's Avatar
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    Default Re: IconImage

    When you call getResource, you are looking for a file relative to the class itself. To find a file using an absolute path, use ImageIO.read(//path to file). This however can make your application less portable, so you can place your image relative to the class file and use the getResource (I typically create an image folder at the root of my package and call getResource("/image/imagename")

  3. The Following User Says Thank You to copeg For This Useful Post:

    The_Mexican (December 5th, 2010)