Graphics2D?

Question

I have created the application complied with J2SDK V.1.4.2. Although there is no error but I cannot see all images loaded in the program. When I run in the browser no images appeared. Anyone can help me?
thanks
Thada Unprasert

Answer 1

The main trouble was in adding managePane to both the center and south parts of container. I moved the main image loading code up to init and added the isApplet boolean to select the loading method based on how the program is run, ie, as an applet or app.
//    <applet code="Thada" width="750" height="600"></applet>
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Thada extends JApplet
  Timer timerEnemy,timerEnd;
  JButton leftButton,rightButton,startButton;
  JPanel managePane;
  PaintPane paintPane;
  boolean randomEnemyX = true;
  static boolean isApplet = true;
  public void init()
    Image image[] = new Image[3];
    if(isApplet) {
      image[0] = getImage(getCodeBase(),"sky.jpg");
      image[1] = getImage(getCodeBase(),"enemy.gif");
      image[2] = getImage(getCodeBase(),"hero.gif");
      /* image[3] = getImage(getCodeBase(),"planebomb.gif");*/
    else {
    image[0] = Toolkit.getDefaultToolkit().getImage("sky.jpg");
    image[1] = Toolkit.getDefaultToolkit().getImage("enemy.gif");
    image[2] = Toolkit.getDefaultToolkit().getImage("hero.gif");
    /*image[3] = Toolkit.getDefaultToolkit().getImage("planebomb.gif");*/
    workPlace(getContentPane(),image);
  public void workPlace(Container container,Image[] image)
    timerEnemy = new Timer(100,new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        paintPane.moveEnemyY += 10;
        if (randomEnemyX == true)
          paintPane.moveEnemyX = (int)(Math.random()*650.0);
          randomEnemyX = false;
        if (paintPane.moveEnemyX > 470)
          paintPane.moveEnemyY = 0;
          randomEnemyX = true;
        if( (paintPane.moveHeroY == paintPane.moveEnemyY)
               && (paintPane.moveHeroX <  paintPane.moveHeroX + 10 )
               && (paintPane.moveHeroX > paintPane.moveEnemyX - 90 ) )
          paintPane.moveEnemyY = 0;
          randomEnemyX = true;
          paintPane.score ++;
        paintPane.repaint();
    timerEnd = new Timer(1000, new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        paintPane.endGame++;
        if (paintPane.endGame == 60)
          timerEnd.stop();
          timerEnemy.stop();
          paintPane.over = true;
        paintPane.repaint();
    startButton = new JButton("Start Game");
    startButton.setFont(new Font("Comic Sans MS",Font.PLAIN,12));
    startButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        timerEnd.start();
        timerEnemy.start();
        paintPane.over = false;
        paintPane.score = 0;
        paintPane.endGame = 0;
    rightButton = new JButton("Right");
    rightButton.setFont(new Font("Comic Sans MS",Font.PLAIN,12));
    rightButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        paintPane.rightWalk = true;
        paintPane.leftWalk = false;
        paintPane.moveHeroX += 20;
    leftButton = new JButton("Left");
    leftButton.setFont(new Font("Comic Sans MS",Font.PLAIN,12));
    leftButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        paintPane.leftWalk = true;
        paintPane.rightWalk = false;
        paintPane.moveHeroX -= 20;
    managePane = new JPanel();
    managePane.add(startButton);
    managePane.add(leftButton);
    managePane.add(rightButton);
    paintPane = new PaintPane(image);
    container.add(managePane,BorderLayout.SOUTH);
    container.add(paintPane,BorderLayout.CENTER);
  public static void main(String[] args)
    try
      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName() );
    catch(Exception e){}
    Image image[] = new Image[3];
    image[0] = Toolkit.getDefaultToolkit().getImage("sky.jpg");
    image[1] = Toolkit.getDefaultToolkit().getImage("enemy.gif");
    image[2] = Toolkit.getDefaultToolkit().getImage("hero.gif");
    image[3] = Toolkit.getDefaultToolkit().getImage("planebomb.gif");
    JFrame frame = new JFrame("Sky Battle");
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e){
        System.exit(0);
//    skybattle sb = new skybattle();
//    sb.workPlace(frame.getContentPane() , image);
    JApplet applet = new Thada();
    frame.getContentPane().add(applet);
    frame.setSize(new Dimension(750,600));
    isApplet = false;
    applet.init();
    applet.start();
    frame.setVisible(true);
class PaintPane extends JPanel
  Image[] pic;
  int moveEnemyX,moveEnemyY,moveHeroX,moveHeroY;
  int score,endGame;
  boolean over,rightWalk,leftWalk;
  public PaintPane(Image[] pic)
    this.pic = pic;
    score = 0;
    over = false;
    rightWalk = true;
    leftWalk = false;
    moveEnemyX = 100;
    moveEnemyY = 10;
    moveHeroX = 300;
    moveHeroY = 20;
  public void paintComponent(Graphics g)
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D) g;
    /* Draw the sky */
    g2.drawImage(pic[1],0,0,this);
    g2.setColor(Color.blue);
    g2.setFont(new Font("Comic Sans MS",Font.BOLD,16));
    g2.drawString("Bomb : " + score,10,420);
    g2.setColor(Color.magenta);
    g2.setFont(new Font("Comic Sans MS",Font.BOLD,16));
    g2.drawString("Time : " + (60-endGame),10,440);
    if (over == true)
      g2.setColor(Color.red);
      g2.setFont(new Font("Comic Sans MS",Font.BOLD,30));
      g2.drawString("GAME OVER",230,200);
    if (rightWalk = true)
      g2.drawImage(pic[2],moveHeroX,moveHeroY,this);
    if (leftWalk = true)
      g2.drawImage(pic[2],moveHeroX,moveHeroY,this);
    g2.drawImage(pic[1],moveEnemyX,moveEnemyY,this);
}