exercise21_5.java

java程序设计 机械工业出版社 书籍代码

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.net.URL;
import java.util.*;

public class Exercise21_5 extends JApplet {
  boolean isStandalone = false;
  ClockWithAlarm clockWithAlarm1 = new ClockWithAlarm();

  // Declare audio clip for alarm sound
  AudioClip alarmSound;

  /**Initialize the applet*/
  public void init() {
    this.setSize(new Dimension(400,300));
    clockWithAlarm1.addActionListener(
      new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        clockWithAlarm1_actionPerformed(e);
      }
    });
    clockWithAlarm1.setTimeStyle(0);
    clockWithAlarm1.setAlarmTime("9,57,23");
    this.getContentPane().add(clockWithAlarm1, BorderLayout.CENTER);

    // Get the URL for the file name
    URL url = this.getClass().getResource("alarmSound.au");

    // Get the audio clip
    alarmSound = Applet.newAudioClip(url);
  }

  /**Main method*/
  public static void main(String[] args) {
    Exercise21_5 applet = new Exercise21_5();
    applet.isStandalone = true;
    JFrame frame = new JFrame();
    frame.setTitle("Exercise21_5");
    frame.getContentPane().add(applet, BorderLayout.CENTER);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    applet.init();
    applet.start();
    frame.setSize(400,320);
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    frame.setLocation((d.width - frame.getSize().width) / 2, (d.height - frame.getSize().height) / 2);
    frame.setVisible(true);
  }

  void clockWithAlarm1_actionPerformed(ActionEvent e) {
    // Play alarm sound
    // alarmSound.play();

    new PlayAlarmSound().start();
  }
}

class PlayAlarmSound extends Thread {
  // Declare audio clip for alarm sound
  AudioClip alarmSound;

  //Construct the applet
  public PlayAlarmSound() {
    // Get the URL for the file name
    URL url = this.getClass().getResource("alarmSound.au");

    // Get the audio clip
    alarmSound = Applet.newAudioClip(url);
  }

  public void run() {
    alarmSound.play();
  }
}

class ClockWithAlarm extends Clock {
  private java.lang.String alarmDate;
  private java.lang.String alarmTime;
  private transient Vector actionListeners;

  public ClockWithAlarm() {
    super();

    // Get initial date and time
    GregorianCalendar cal = new GregorianCalendar(tz);

    // Initialize alarm date, which is consists of
    // year, month, and date, separated by commas.
    alarmDate = cal.get(cal.YEAR) + "," + cal.get(cal.MONTH)
      + "," + cal.get(cal.DATE);

    // Initialize alarm time, which is consists of
    // hour, minute, and second, separated by commas.
    alarmTime = cal.get(cal.HOUR) + "," + cal.get(cal.MINUTE)
      + "," + cal.get(cal.SECOND);
  }

  public void run()
  {
    while (true)
    {
      try
      {
        thread.sleep(1000);
      }
      catch (InterruptedException e)
      {}
      repaint();

      // Fire tick event if the current time matches alarm time
      GregorianCalendar rightNow = new GregorianCalendar(tz);
      String rightNowDate = rightNow.get(rightNow.YEAR)
        + "," +  rightNow.get(rightNow.MONTH) + "," +
        rightNow.get(rightNow.DATE);
      String rightNowTime = rightNow.get(rightNow.HOUR)
        + "," +  rightNow.get(rightNow.MINUTE) + "," +
        rightNow.get(rightNow.SECOND);
      if (rightNowDate.equals(alarmDate)
        && rightNowTime.equals(alarmTime))
        fireActionPerformed(new ActionEvent
          (this, ActionEvent.ACTION_PERFORMED, null));
    }
  }

  public void setAlarmDate(java.lang.String newAlarmDate) {
    alarmDate = newAlarmDate;
  }

  public java.lang.String getAlarmDate() {
    return alarmDate;
  }

  public void setAlarmTime(java.lang.String newAlarmTime) {
    alarmTime = newAlarmTime;
  }

  public java.lang.String getAlarmTime() {
    return alarmTime;
  }

  // Generated by JBuilder
  public synchronized void removeActionListener(ActionListener l) {
    if (actionListeners != null && actionListeners.contains(l)) {
      Vector v = (Vector) actionListeners.clone();
      v.removeElement(l);
      actionListeners = v;
    }
  }

  // Generated by JBuilder
  public synchronized void addActionListener(ActionListener l) {
    Vector v = actionListeners ==
      null ? new Vector(2) : (Vector) actionListeners.clone();
    if (!v.contains(l)) {
      v.addElement(l);
      actionListeners = v;
    }
  }

  // Generated by JBuilder
  protected void fireActionPerformed(ActionEvent e) {
    if (actionListeners != null) {
      Vector listeners = actionListeners;
      int count = listeners.size();
      for (int i = 0; i < count; i++)
        ((ActionListener) listeners.elementAt(i)).actionPerformed(e);
    }
  }
}