clocklabel.java~1~

Java+SQL2000宾馆管理系统,可实现简单的管理操作。

import java.awt.*;
import javax.swing.JLabel;
import java.util.*;
import java.text.*;
/**
 * <p>Title: 宾馆官理系统</p>
 * <p>Description: 第七章实例</p>
 * <p>Copyright: Copyright (c) 2006</p>
 * <p>Company: </p>
 * @author 苏年乐
 * @version 1.0
 */

/**
 * 计时时钟
 */
public class Clocklabel
    extends JLabel
    implements Runnable {
  private Thread clockthread = null;
  public Clocklabel() {
    if (clockthread == null) {
      clockthread = new Thread(this, "clock");
      clockthread.start();
    }
  }

  public void run() {
    while (true) {
      Calendar cal = Calendar.getInstance();
      Date date = cal.getTime();
      DateFormat dateformatter = DateFormat.getTimeInstance();
      this.setText(dateformatter.format(date));
      try {
        Thread.sleep(1000);
      }
      catch (Exception e) {}
    }

  }

  public Thread getClockthread() {
    return clockthread;
  }

}