Rolling Images for poker Game

Question

Hello everybody,
i m trying to make poker game in java. it is some what like this, there will three labels which will show continuos scrolling images or numbers. there will a button "HIT" button to stop moving images.after that those images will stop one by one.if all images are same then he will get message of congratulation. first of all i m trying to show numbers in labels. but it should look like it is rolling. with settext method it is directly printing the number. can anybody suggest me how to print number in Jlabel with rolling effect? . Thanks in advance

Answer 1

import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.*;
import javax.swing.*;
public class SpinningGeeks extends JPanel implements ActionListener,
                                                     Runnable {
    BufferedImage image;
    Rectangle[] rects;
    int[] yPos;
    int dy = 3;
    Random seed = new Random();
    boolean[] runs = new boolean[3];
    Thread thread;
    long delay = 25;
    boolean stopping = false;
    public void actionPerformed(ActionEvent e) {
        String ac = e.getActionCommand();
        if(ac.equals("START"))
            start();
        if(ac.equals("STOP"))
            stopping = true;
    public void run() {
        int[] ds = new int[yPos.length];
        for(int j = 0; j < yPos.length; j++) {
            ds[j] = dy -1 + seed.nextInt(3);
        int runIndex = 0;
        boolean countingDown = false;
        long time = 0;
        while(runs[runs.length-1]) {
            try {
                Thread.sleep(delay);
            } catch(InterruptedException e) {
                break;
            if(stopping && !countingDown) {
                int remainder = yPos[runIndex] % rects[runIndex].height;
                boolean atEdge = remainder < ds[runIndex]/2;
                if(atEdge) {
                    // Stop here, start waiting 2 seconds before
                    // moving on to stop the next image.
                    countingDown = true;
                    time = 0;
                    runs[runIndex] = false;
                    runIndex++;
                    if(runIndex > runs.length-1) {
                        continue;
            } else if(countingDown) {
                // Wait 2 seconds before stopping the next image.
                time += delay;
                if(time > 2000) {
                    countingDown = false;
            // Advance all images that have not been stopped.
            for(int j = 0; j < yPos.length; j++) {
                if(runs[j]) {
                    yPos[j] += ds[j];
                    if(yPos[j] > image.getHeight()) {
                        yPos[j] = 0;
            repaint();
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        int pad = 5;
        int x = (getWidth() - (3*rects[0].width + 2*pad))/2;
        int y = (getHeight() - rects[0].height)/2;
        for(int j = 0; j < rects.length; j++) {
            rects[j].setLocation(x, y);
            x += rects[j].width + pad;
        Shape origClip = g2.getClip();
        for(int j = 0; j < yPos.length; j++) {
            x = rects[j].x;
            y = rects[j].y - yPos[j];
            // Comment-out next line to see what's going on.
            g2.setClip(rects[j]);
            g2.drawImage(image, x, y, this);
            if(yPos[j] > image.getHeight() - rects[j].height) {
                y += image.getHeight();
                g2.drawImage(image, x, y, this);
        g2.setClip(origClip);
        g2.setPaint(Color.red);
        for(int j = 0; j < rects.length; j++) {
            g2.draw(rects[j]);
    private void start() {
        if(!runs[runs.length-1]) {
            Arrays.fill(runs, true);
            stopping = false;
            thread = new Thread(this);
            thread.setPriority(Thread.NORM_PRIORITY);
            thread.start();
    private void stop() {
        runs[runs.length-1] = false;
        if(thread != null) {
            thread.interrupt();
        thread = null;
    private JPanel getContent(BufferedImage[] images) {
        // Make a film strip assuming all images have same size.
        int w = images[0].getWidth();
        int h = images.length*images[0].getHeight();
        int type = BufferedImage.TYPE_INT_RGB;
        image = new BufferedImage(w, h, type);
        Graphics2D g2 = image.createGraphics();
        int y = 0;
        for(int j = 0; j < images.length; j++) {
            g2.drawImage(images[j], 0, y, this);
            y += images[j].getHeight();
        g2.dispose();
        // Initialize clipping rectangles.
        rects = new Rectangle[3];
        for(int j = 0; j < rects.length; j++) {
            rects[j] = new Rectangle(w, images[0].getHeight());
        // Initialize yPos array.
        yPos = new int[rects.length];
        for(int j = 0; j < yPos.length; j++) {
            yPos[j] = 2*j*images[0].getHeight();
        return this;
    private JPanel getControls() {
        String[] ids = { "start", "stop" };
        JPanel panel = new JPanel();
        for(int j = 0; j < ids.length; j++) {
            JButton button = new JButton(ids[j]);
            button.setActionCommand(ids[j].toUpperCase());
            button.addActionListener(this);
            panel.add(button);
        return panel;
    public static void main(String[] args) throws IOException {
        String[] ids = { "-c---", "--g--", "---h-", "----t", "-cght" };
        BufferedImage[] images = new BufferedImage[ids.length];
        for(int j = 0; j < images.length; j++) {
            String path = "images/geek/geek" + ids[j] + ".gif";
            images[j] = javax.imageio.ImageIO.read(new File(path));
        SpinningGeeks test = new SpinningGeeks();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(test.getContent(images));
        f.add(test.getControls(), "Last");
        f.setSize(400,300);
        f.setLocation(200,200);
        f.setVisible(true);
}geek images from [Using Swing Components Examples|http://java.sun.com/docs/books/tutorial/uiswing/examples/components/index.html]