ticker.java

用多线程实现两行文字的移动

import java.awt.*;
public class Ticker extends Canvas implements Runnable
{ public  int xPos,yPos;
  public  int height,width;
  public  Thread runner=null;
  public  String text =null;
  public  FontMetrics metrics=null;
  public  Font font=new Font("Monospaced",Font.BOLD,12);
  public Ticker(String _text)
  {text=_text;
  metrics=getFontMetrics(font);
  width=metrics.stringWidth(text);
  height=metrics.getHeight();
  xPos=getSize().width;
  yPos=height;
  runner=new Thread(this);
  runner.start();
  //start();   //调用下面start方法
}
//public void start()
//{if(runner==null)
//{runner=new Thread(this);
//runner.start();}
//}

//