Thread: Puzzle Programming - HEEELP! DX

Hello everyone, I will have to finish a school project until the .. 10th of July or, if I am lucky, next week.

I can´t seem to solve a certain problem in one of my classes that I haven´t even been able to detect yet.

The code I have for the puzzle so far is this:

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
 
import javax.swing.Box;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
 
public class Puzzle extends JFrame implements ActionListener {
    private CountDown cd;
    private JPanel centerPanel;
    private JButton button;
    private JLabel label;
    private Image source;
    private Image image;
    int[][] pos;
    int width, height;
 
    public Puzzle() {
        CountDown cd = new CountDown();
        add(cd);
        initUI();
    }
 
    public final void initUI() {
 
        pos = new int[][]{
                    {0, 1, 2},
                    {3, 4, 5},
                    {6, 7, 8},
                    {9, 10, 11}
                };
 
 
        centerPanel = new JPanel();
        centerPanel.setLayout(new GridLayout(4, 4, 0, 0));
 
        ImageIcon lama = new ImageIcon(Puzzle.class.getResource("Lama.png"));
        source = lama.getImage();
 
        width = lama.getIconWidth();
        height = lama.getIconHeight();
 
 
        add(Box.createRigidArea(new Dimension(0, 5)), BorderLayout.NORTH);
        add(centerPanel, BorderLayout.CENTER);
 
 
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 3; j++) {
                if (j == 2 && i == 3) {
                    label = new JLabel("");
                    centerPanel.add(label);
                } else {
                    button = new JButton();
                    button.addActionListener(this);
                    centerPanel.add(button);
                    image = createImage(new FilteredImageSource(source.getSource(),
                            new CropImageFilter(j * width / 3, i * height / 4,
                            (width / 3) + 1, height / 4)));
                    button.setIcon(new ImageIcon(image));
                }
            }
        }
 
        setSize(325, 275);
        setTitle("Puzzle");
        setResizable(false);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    }
 
    public void actionPerformed(ActionEvent e) {
 
        JButton button = (JButton) e.getSource();
        Dimension size = button.getSize();
 
        int labelX = label.getX();
        int labelY = label.getY();
        int buttonX = button.getX();
        int buttonY = button.getY();
        int buttonPosX = buttonX / size.width;
        int buttonPosY = buttonY / size.height;
        int buttonIndex = pos[buttonPosY][buttonPosX];
 
 
 
        if (labelX == buttonX && (labelY - buttonY) == size.height) {
 
            int labelIndex = buttonIndex + 3;
 
            centerPanel.remove(buttonIndex);
            centerPanel.add(label, buttonIndex);
            centerPanel.add(button, labelIndex);
            centerPanel.validate();
        }
 
        if (labelX == buttonX && (labelY - buttonY) == -size.height) {
 
            int labelIndex = buttonIndex - 3;
            centerPanel.remove(labelIndex);
            centerPanel.add(button, labelIndex);
            centerPanel.add(label, buttonIndex);
            centerPanel.validate();
        }
 
        if (labelY == buttonY && (labelX - buttonX) == size.width) {
 
            int labelIndex = buttonIndex + 1;
 
            centerPanel.remove(buttonIndex);
            centerPanel.add(label, buttonIndex);
            centerPanel.add(button, labelIndex);
            centerPanel.validate();
        }
 
        if (labelY == buttonY && (labelX - buttonX) == -size.width) {
 
            int labelIndex = buttonIndex - 1;
 
            centerPanel.remove(buttonIndex);
            centerPanel.add(label, labelIndex);
            centerPanel.add(button, labelIndex);
            centerPanel.validate();
        }
    }
 
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                Puzzle puzzle = new Puzzle();
                puzzle.setVisible(true);
            }
        });
    }
}

I don´t even know where to start searching.

The CountDown works fine by the way. It´s the puzzle that sorta fails.
And BlueJ (I have to use it for school, the shittiest IDE ever..) couldn´t find any syntax errors or Exceptions, etc..
My IDE thinks that it works, but only shows the CountDown as if everything was alright. :/
But where did my picture go? :X

I have the same problem in the two other levels, too.

Do you have a question about the code you've posted?

Yeah... I can´t figure out the mistake in it.

I know that there must be one.. a fatal one, actually, but I don´t know where. Whatever it is, the puzzle doesn´t work.

the puzzle doesn´t work.

Please explain.
What is the program supposed to do?
What does it do now?
Copy the program's output, post it here and explain what is wrong with it and show what it should be.