ells.java~39~

很好得jbuilder100例源代码

package dot;

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

public class ells extends Applet {
 int x,y;
 int i,j,k;
 Color mycolor;
 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);
  }
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Construct the applet*/
  public ells() {
  }
  /**Initialize the applet*/
  /**Component initialization*/
  private void jbInit() throws Exception {
    this.setBackground(SystemColor.window);
    this.setForeground(Color.orange);
    this.addMouseListener(new java.awt.event.MouseAdapter() {
      public void mousePressed(MouseEvent e) {
        this_mousePressed(e);
      }
    });
  }
  /**Get Applet information*/
  public String getAppletInfo() {
    return "Applet Information";
  }
  /**Get parameter info*/
  public String[][] getParameterInfo() {
    return null;
  }

  void this_mousePressed(MouseEvent e) {
  x=e.getX();
  y=e.getY();
  repaint();
  }
  public void paint(Graphics g){
     if(x>255)
       i=x-255;
     else
       i=x;
    if(y>255)
       j=y-255;
     else
       j=y;
     if(i+j>255)
       k=i+j-255;
      else
       k=i+j;
     mycolor=new Color(i,j,k);
     g.setColor(mycolor);
     g.fillOval(x-10,y-10,20,20);
  }
}