[Java] Java实现的简单数字时钟功能示例

import javax.swing.jframe;
import javax.swing.jpanel;
import java.awt.borderlayout;
import javax.swing.jlabel;
import java.awt.font;
import java.text.simpledateformat;
import java.util.date;
public class time extends jframe implements runnable{
  /**
   *
   */
  private static final long serialversionuid = 1l;
  private jlabel date;
  private jlabel time;
  public time() {
  //初始化图形界面
  this.setvisible(true);
  this.settitle("数字时钟");
  this.setsize(282, 176);
  this.setlocation(200, 200);
  this.setresizable(true);
  jpanel panel = new jpanel();
  getcontentpane().add(panel, borderlayout.center);
  panel.setlayout(null);
  //时间
  time = new jlabel();
  time.setbounds(31, 54, 196, 59);
  time.setfont(new font("arial", font.plain, 50));
  panel.add(time);
  //日期
  date = new jlabel();
  date.setfont(new font("微软雅黑", font.plain, 13));
  date.setbounds(47, 10, 180, 22);
  panel.add(date);
  }
  //用一个线程来更新时间
   public void run() {
   while(true){
   try{
     date.settext(new simpledateformat("yyyy 年 mm 月 dd 日  eeee").format(new date()));
     time.settext(new simpledateformat("hh:mm:ss").format(new date()));
   }catch(throwable t){
   t.printstacktrace();
   }
   }
  }
  public static void main(string[] args) {
  new thread(new time()).start();
  }
}