进口java.awt中的*。
java.awt.event中导入*。
java.awt.image中导入*。
进口的javax.swing *。
进口了java.util.Random;类ImageBlinker扩展JComponent的{    BufferedImage的图像;
    布尔showImage;
    INT X = -1;
    诠释Y = -1;
    随机ř;    ImageBlinker（）{
        //把你的图像读取code在这里..
        图像=新的BufferedImage（32,32，BufferedImage.TYPE_INT_ARGB）;
        图形G = image.createGraphics（）;
        g.setColor（Color.ORANGE）;
        g.fillOval（0,0,32,32）;
        // END  - 图像读        R =新的随机（）;
        ActionListener的听众=新的ActionListener（）{
            公共无效的actionPerformed（ActionEvent的AE）{
                如果（形象！= NULL）{
                    如果（！showImage）{
                        INT W = image.getWidth（）;
                        INT H = image.getHeight（）;
                        INT RX =的getWidth（） - 瓦;
                        INT RY =的getHeight（） -  H;
                        如果（RX -1个和放大器;＆安培; RY -1个）{
                            X = r.nextInt（RX）;
                            Y = r.nextInt（RY）;
                        }
                    }
                    ！showImage = showImage;
                    重绘（）;
                }
            }
        };
        定时器定时器=新定时器（600，监听器）;
        timer.start（）;        集preferredSize（新尺寸（150,100））;
        JOptionPane.showMessageDialog（null，则此）;
        timer.stop（）;
    }    公共无效的paintComponent（图形G）{
        g.setColor（Color.BLUE）;
        g.fillRect（0,0，的getWidth（），的getHeight（））;
        如果（showImage＆安培;＆安培;！图像= NULL）{
            g.drawImage（图像，X，Y，这一点）;
        }
    }    公共静态无效的主要（字串[] args）{
        SwingUtilities.invokeLater（Runnable的新（）{
            公共无效的run（）{
                新ImageBlinker（）;
            }
        }）;
    }
}
 

I have an image inside the JApplet and I want it to appear in a random position. It will disappear after 1 second and appear again, in another random position.

How do I implement 'blinking in a random position'?

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.net.URL;

public class Random extends JApplet
{

 Image ball;

  public void init()
  {
    try
    {
        URL pic = new URL(getDocumentBase(), "ball.gif");
        ball = ImageIO.read(pic);
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
   }

    public void paint(Graphics g)
    {
       if (ball != null)
      {
        g.drawImage(ball,50,50,50,50,this);
      }
    }
}

import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
import java.util.Random;

class ImageBlinker extends JComponent {

    BufferedImage image;
    boolean showImage;
    int x = -1;
    int y = -1;
    Random r;

    ImageBlinker() {
        // put your image reading code here..
        image = new BufferedImage(32,32,BufferedImage.TYPE_INT_ARGB);
        Graphics g = image.createGraphics();
        g.setColor(Color.ORANGE);
        g.fillOval(0,0,32,32);
        // END - image read

        r = new Random();
        ActionListener listener = new ActionListener(){
            public void actionPerformed(ActionEvent ae) {
                if (image!=null) {
                    if (!showImage) {
                        int w = image.getWidth();
                        int h = image.getHeight();
                        int rx = getWidth()-w;
                        int ry = getHeight()-h;
                        if (rx>-1 && ry>-1) {
                            x = r.nextInt(rx);
                            y = r.nextInt(ry);
                        }
                    }
                    showImage = !showImage;
                    repaint();
                }
            }
        };
        Timer timer = new Timer(600,listener);
        timer.start();

        setPreferredSize(new Dimension(150,100));
        JOptionPane.showMessageDialog(null, this);
        timer.stop();
    }

    public void paintComponent(Graphics g) {
        g.setColor(Color.BLUE);
        g.fillRect(0,0,getWidth(),getHeight());
        if (showImage && image!=null) {
            g.drawImage(image,x,y,this);
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new ImageBlinker();
            }
        });
    }
}