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Thread: Exception Posting Image.

  1. #1
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    Default Exception Posting Image.

    Hi I am new to all of this and am just trying to simple add an Image but I get this error:

    Exception in thread "main" java.lang.NullPointerException
    at javax.swing.ImageIcon.<init>(ImageIcon.java:181)
    at bardejov.board.<init>(board.java:26)
    at bardejov.Bardejov.<init>(Bardejov.java:17)
    at bardejov.Bardejov.main(Bardejov.java:31)

    this is my code:


     */
    package bardejov;
     
     
     
    import java.awt.Graphics;
    import java.awt.Graphics2D;
     
    import java.awt.Image;
     
    import javax.swing.ImageIcon;
    import javax.swing.JPanel;
     
     
    public class board extends JPanel
    {
        Image bardejov;
     
        public board() 
        {
            ImageIcon ii = new ImageIcon(this.getClass().getResource("zombiemenu.jpg"));
            bardejov = ii.getImage();
        }
     
        public void paint(Graphics g) {
     
            Graphics2D g2d = (Graphics2D) g;
            g2d.drawImage(bardejov, 10, 10, null); 
        }
     
    }

    and:

    package bardejov;
     
    import javax.swing.JFrame;
     
     
    public class Bardejov extends JFrame
    {
         public Bardejov() 
         {
     
            add(new board());
     
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setSize(280, 240);
            setLocationRelativeTo(null);
            setTitle("Bardejov");
            setVisible(true);
        }
     
     
     
        /**
         * @param args the command line arguments
         */
        public static void main(String[] args)
        {
            new Bardejov(); 
     
    }

    Any Help would be appreciated.


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Exception Posting Image.

    What code is at line 26: bardejov.board.<init>(board.java:26)
    What folder is the image file in?
    What folder is the .class file in?
    Your program is in a package. The getClass().getResource() uses that as part of the path to find the image.

    How are you executing your program? In a console window with the java command?

    If you are using an IDE, then you'll need to ask someone how to configure your IDE.

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

    patKevin (July 25th, 2011)

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