mov.java

来自「很好得jbuilder100例源代码」· Java 代码 · 共 73 行

package moving;

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


public class mov extends Applet {
  public int i=0;
  public boolean flag=true;
  Font myfont=new Font("timsroman",Font.BOLD ,30);
  Color mycolor=new Color(255,255,0);
  Mov mythread=new Mov();
  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);
  }
class Mov extends Thread{
   public void run(){
   while(true)
  {
  repaint();
  try{mythread.sleep(40);}
  catch(InterruptedException e){}
  }
}
}
 public void start(){
 mythread.start();
 }
 public void stop(){
 mythread.stop();
  }

 public void paint(Graphics g)
 {if (flag==true)
  i++;
  else
  i--;
  if (i==280)
  flag=false;
  if (i==0)
  flag=true;
  g.setColor(mycolor);
  g.setFont(myfont);
  g.drawString("world",i,i);
  }
  /**Construct the applet*/
  public mov() {
  }
  /**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;
  }
}