adddot.java~1~

方面

package adddot;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */

public class adddot extends Applet {
  boolean isStandalone = false;
  //Get a parameter value
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }

  //Construct the applet
  public adddot() {
  }
  //Initialize the applet
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception {
  }
  //Get Applet information
  public String getAppletInfo() {
    return "Applet Information";
  }
  //Get parameter info
  public String[][] getParameterInfo() {
    return null;
  }
int x,y;//存放坐标
 private int colorR,colorG,colorB;//存放颜色参数
void this_mousePressed(MouseEvent e) {
x=e.getX();
y=e.getY();
if(x>255)
colorR=x-255;
if(y>255)
colorG=y-255;
if(x+y>255)
colorB=(x+y)%255;
repaint();
  }
public void paint(Graphics g){
Color color=new Color(colorR,colorG,colorB);
g.setColor(color);
g.fillOval(x-5,y-5,10,10);
}
public void  update(Graphics g){
paint(g);
x-=5;
y-=5;
}

   }