donghuaword.java

Java课程中所有的可运行程序 全部都是java课程中所涉及到的源码

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

public class donghuaword extends Applet implements Runnable{
   Color nowcolor=Color.black;

   public Thread runner;
   public int xpos,tag=0;



    public void init(){

      xpos=600;

setBackground(Color.white);
    }



     public void start() {
    if (runner == null); {
     runner = new Thread(this);			  //new Thread
    runner.start();
    }
  }

  public void stop() {
    if (runner != null) {
     // runner.stop();
      runner = null;
    }
  }

public void run() {
  while(Thread.currentThread()==runner){
	xpos=xpos-10;
	if(xpos==10)
	xpos=600;
	  repaint();
	  try { Thread.sleep(200); }
	   catch (InterruptedException e) { }

}
 }


public void paint(Graphics g){

      int red,green,blue;

   red=(int)Math.floor(Math.random()*256);
 green=(int)Math.floor(Math.random()*256);
 blue=(int)Math.floor(Math.random()*256);
 g.setColor(new Color(red,green,blue));
   g.setFont(new Font("TimesRoman",Font.BOLD,48));
   g.drawString("Hello!",xpos,60);
        }

	}