How to update drawImage() images

Question

This may be quite simple for most, but I'm stumped. I have BuffereredImages[] being passed to a class where my Graphics are. I then use drawImage() to draw the images on the JPanel. That all works fine. My problem is that I have a button that I need to repaint or redraw the images when the button is clicked. I have the button listener all setup. I just don't know how to get the drawImages() to redraw using different images.
In my main panel I have:
         die1 = rand.nextInt(6);
         die2 = rand.nextInt(6) + 6;
         //get images for vending machine
            img = loadImages();
         //paint all images
            dieImg = new DiceImage(die1, die2, img);Then my button listener:
       private class ButtonListener implements ActionListener
         //declare variables 
         private Object source;
          public void actionPerformed(ActionEvent event)
            source = event.getSource();
            *   Roll Button         *
            if (source == rollBtn)
              //paint all images
            *   Pass Button         *
            if (source == passBtn)
     System.out.println("Pass");
      } //end of Button Listener ClassThen this is where I get the images:
       private BufferedImage[] loadImages()
           //create prefix for path if needed
         String prefix = "";
           //create array of filenames to draw
         String[] fileNames = { "die1-1.gif", "die1-2.gif", "die1-3.gif", "die1-4.gif", "die1-5.gif", "die1-6.gif",
                                "die2-1.gif", "die2-2.gif", "die2-3.gif", "die2-4.gif", "die2-5.gif", "die2-6.gif" };
         //get the files
         BufferedImage[] images = new BufferedImage[fileNames.length];
         for(int j = 0; j < images.length; j++)
            try
               URL url = getClass().getResource(prefix + fileNames[j]);
               images[j] = ImageIO.read(url);
                catch(MalformedURLException mue)
                  System.err.println("url: " + mue.getMessage());
                catch(IOException ioe)
                  System.err.println("read: " + ioe.getMessage());
           //return the array of images
         return images;
      }And this is where I draw the images:
       public class DiceImage extends JPanel
         private int x, y;
         private int width = 500, height = 150;
         private BufferedImage[] image;
         private int die1, die2;
      //create constructor and pass in image array     
          public DiceImage (int die1, int die2, BufferedImage[] image)
     this.die1 = die1;
     this.die2 = die2;
                     this.image = image;
      * Beginning of the paintWindow method
          public void paint(Graphics display)
     super.paint(display);
     //draw images in vending machine 3D box
                      x = 75;  //center the to images evenly
                      y = 10;  //10 pixels down from the top of the panel
     display.drawImage(image[die1], x, y, this);
     display.drawImage(image[die2], x + 200, y, this);                                   
         } // end paint
      //sets the preferred size for the item box
          public Dimension getPreferredSize()
            return(new Dimension(width, height));
      } //end of class   Let me know if you need any other snippets of code. I'm new to Java so please be gentle!

Answer 1

I just don't know how to get the drawImages() to redraw using different images.display.drawImage(image[die1], x, y, this);
display.drawImage(image[die2], x + 200, y, this);     
In your paint method you are specifying the image to be drawn based on the values of die1 and die2. So if you want to draw a different image then you need to change the value of these two variables. So you need a method that changes these values.