Applet的图像丢失 [英] Applet image missing

问题描述

您好再次成员＃1，

的CatchTheCreature Applet类应该显示的图像中的由时间延迟的不同位置被重画，但由于某些原因没有被显示的图象。

 进口java.awt.Color中;
  进口java.awt.Graphics;
  进口java.awt.event.ActionEvent中;
  进口java.awt.event.ActionListener;
  进口java.awt.event.MouseEvent中;
  进口java.awt.event.MouseListener;
  进口了java.util.Random;  进口javax.swing.ImageIcon中;
  进口javax.swing.JApplet中;
  进口javax.swing.Timer中;  公共类CatchTheCreature扩展JApplet的{私人诠释高度= 300;
私人诠释宽度= 600;
私人最终诠释延迟= 1001;私人ImageIcon的形象;
私人定时器定时器;
私人诠释的x，y;
私人INT计数器= 0;
随机GN =新的随机（）;公共无效的init（）{
    DotListener点=新DotListener（）;
    addMouseListener将（点）;    图像=新的ImageIcon（Monster.png）;    定时器=新定时器（延迟，新timerListener（））;
    X = 40;
    Y = 40;
    。的getContentPane（）的setBackground（Color.black）;}//动作监听器方法
私有类timerListener实现的ActionListener {
    公共无效的actionPerformed（ActionEvent的五）{        X = gn.nextInt（宽度）;
        Y = gn.nextInt（高度）;        重绘（）;
    }}私有类DotListener实现的MouseListener {    公共无效鼠标pressed（事件的MouseEvent）{    }    @覆盖
    公共无效的mouseClicked（事件的MouseEvent）{
        如果（event.getX（）＆GT;（X）及与放大器; event.getX（）≤（X + 60）
                ＆功放;＆安培; event.getY（）＆下; （γ+ 60）及与放大器; event.getY（）＆GT; （y））为{
            X = gn.nextInt（宽度）;
            Y = gn.nextInt（高度）;
            计数器=计数器+ 1;
            重绘（）;
        }
    }    @覆盖
    公共无效的mouseEntered（事件的MouseEvent）{    }    @覆盖
    公共无效的mouseExited（事件的MouseEvent）{    }    @覆盖
    公共无效的mouseReleased（事件的MouseEvent）{    }}公共无效漆（图形G）{
    super.paint（G）;
    g.setColor（Color.yellow）;
    image.paintIcon（此，G，X，Y）;
    g.drawString（accuratly点击了：+专柜，5，15）;
}公共无效的start（）{
    timer.start（）;}公共无效停止（）{
    timer.stop（）;
}
 

}

这是我的HTML文件

 ＆LT;小程序code = CatchTheCreature宽度= 250 HEIGHT = 300＆GT;     ＆LT; /小程序＆GT;
 

如果有人能告诉我怎样可以显示applet的图像图标我将非常感激。

感谢

解决方案

  

..形象=新的ImageIcon（Monster.png）;

• 基于字符串构造器的ImageIcon presumes的字符串重新present一个文件。


• 一个沙箱小程序不能访问文件的对象，但可以访问网​​址■从同一$ C到来$ C碱基/文档基。


• 使用 getDocumentBase（） / 得到codeBase的（）与该图像的相对路径，小应用程序的可移植性（假设图像也上传到同一个地方）。

Hello again Stackoverflow members,

The CatchTheCreature Applet class is supposed to display an image being repainted in different locations by a time delay, but for some reason the image is not being displayed.

  import java.awt.Color;
  import java.awt.Graphics;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.awt.event.MouseEvent;
  import java.awt.event.MouseListener;
  import java.util.Random;

  import javax.swing.ImageIcon;
  import javax.swing.JApplet;
  import javax.swing.Timer;

  public class CatchTheCreature extends JApplet {

private int height = 300;
private int width = 600;
private final int delay = 1001;

private ImageIcon image;
private Timer timer;
private int x, y;
private int counter = 0;
Random gn = new Random();

public void init() {
    DotListener dot = new DotListener();
    addMouseListener(dot);

    image = new ImageIcon("Monster.png");

    timer = new Timer(delay, new timerListener());
    x = 40;
    y = 40;
    getContentPane().setBackground(Color.black);

}

// Action Listener Methods
private class timerListener implements ActionListener {
    public void actionPerformed(ActionEvent e) {

        x = gn.nextInt(width);
        y = gn.nextInt(height);

        repaint();
    }

}

private class DotListener implements MouseListener {

    public void mousePressed(MouseEvent event) {

    }

    @Override
    public void mouseClicked(MouseEvent event) {
        if (event.getX() > (x) && event.getX() < (x + 60)
                && event.getY() < (y + 60) && event.getY() > (y)) {
            x = gn.nextInt(width);
            y = gn.nextInt(height);
            counter = counter + 1;
            repaint();
        }
    }

    @Override
    public void mouseEntered(MouseEvent event) {

    }

    @Override
    public void mouseExited(MouseEvent event) {

    }

    @Override
    public void mouseReleased(MouseEvent event) {

    }

}

public void paint(Graphics g) {
    super.paint(g);
    g.setColor(Color.yellow);
    image.paintIcon(this, g, x, y);
    g.drawString("Clicked accuratly: " + counter, 5, 15);
}

public void start() {
    timer.start();

}

public void stop() {
    timer.stop();
}

}

This is my html file

     <applet code = CatchTheCreature width = 250 height = 300>

     </applet>

If someone can tell me how i can display the image icon on the applet I would be very grateful.

Thanks

解决方案

..image = new ImageIcon("Monster.png");

• The String based constructor to ImageIcon presumes the String to represent a File.
• A sand-boxed applet cannot access File objects, but can access URLs coming from the same code base/document base.
• Use getDocumentBase()/getCodeBase() with an relative path to the image, and the applet will be portable (assuming the image is also uploaded to the same place).

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