如何在此代码中在 JWindow 上显示 jpeg

Question

我正在尝试在应用程序启动时显示带有欢迎图像的介绍窗口。一切都加载得很好，但图像不显示。加载应用程序时，这就是我看到的。

public class Window extends JWindow
{
  //java.net.URL imgIntro = getClass().getResource("/images/intro.jpg");
  ImageIcon imIntro = new ImageIcon("/images/intro.jpg");

  //java.net.URL imgRegles = getClass().getResource("/images/rules.jpg");
  ImageIcon imRules = new ImageIcon("/images/rules.jpg");
  static Thread t = new Thread();
  static int thread = 0;
  static JButton bouton;
  static int X;
  static int Y;

  public Window( int X, int Y, int type) {
    super();
    Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
    setSize(X,Y);
    setLocation( (dim.width - X)/2 , (dim.height - Y)/2);
    setVisible(true);
    Container fen = getContentPane();
    if (type == 1 ) bouton = new JButton(imIntro);
    else            bouton = new JButton(imRules);
    bouton.setPreferredSize(new Dimension(X, Y) );
    fen.add( bouton);
    bouton.setVisible( true );
    show();
    if( type == 1 ) {
        try {
            Thread.sleep(1000);
            thread = 1;
        }
        catch( java.lang.InterruptedException ex ) {
            JOptionPane.showMessageDialog(null, "error");
            }
        dispose();
    }
    else {
        bouton.addActionListener( new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                     dispose();
                }
        });
    }
 }
}

Answer 1

缺少代码

getClass().getResource

然后

ImageIcon imIntro = new ImageIcon(getClass().getResource("/images/Lintro.jpg"));

完整示例在这里