clock.java

时钟万年历代码 Clock.java放在了一个名叫 Clock的包里

/**
 * Clock.java
 * Summary 数字时间显示
 * Created on 
 * @author 
 * remark 如有改动请发一份代码给我，邮箱[e-mail]
 */
package Clock;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
class Clock extends Canvas implements Runnable{
    MainFrame mf;
    Thread t;
    String time;
    Clock(MainFrame mf){
    this.mf=mf;
    setSize(400,40);
    setBackground(Color.white);
    t=new Thread(this);                //实例化线程
    t.start();                        //调用线程    
    }
    public void run(){
    while(true){
    try{
    t.sleep(1000);                    //休眠1秒钟
    }catch(InterruptedException e){
    System.out.println("异常");
    }
    this.repaint(100);
    }
    }
    public void paint(Graphics g){
    Font f=new Font("宋体",Font.BOLD,16);    
    SimpleDateFormat SDF=new SimpleDateFormat("yyyy'年'MM'月'dd'日'HH:mm:ss");//格式化时间显示类型
    Calendar now=Calendar.getInstance();
    time=SDF.format(now.getTime());        //得到当前日期和时间
    g.setFont(f);
    g.setColor(Color.orange);
    g.drawString(time,100,25);
    }
}