Java-Clock.rar_闹钟

import java.awt.*; import java.awt.event.*; import java.applet.*; import java.util.*; //闹钟 public class AlarmApplet extends Applet implements Runnable{ //Download by http://www.codefans.net TextField tfHour,tfMinute,tfSecond,tfNowHour,tfNowMinute,tfNowSecond; //显示和输入信息的文本域 Button btStart,btStop; //打开和关闭闹钟按钮 Thread alarm; //闹钟线程 boolean turnOn; //是否打开 public void init(){ turnOn=true; //初始化参数 Panel panel2=new Panel(); //实例化面板 Panel panel3=new Panel(); Panel panel4=new Panel(); tfHour=new TextField(1); //增加组件到面板上 tfMinute=new TextField(1); tfSecond=new TextField(1); tfNowHour=new TextField(1); tfNowMinute=new TextField(1); tfNowSecond=new TextField(1); btStart=new Button("开"); btStop=new Button("关"); panel2.add(new Label("当前时间：")); panel2.add(tfNowHour); panel2.add(new Label("时")); panel2.add(tfNowMinute); panel2.add(new Label("分")); panel2.add(tfNowSecond); panel2.add(new Label("秒")); panel3.add(new Label("闹钟时间：")); panel3.add(tfHour); panel3.add(new Label("时")); panel3.add(tfMinute); panel3.add(new Label("分")); panel3.add(tfSecond); panel3.add(new Label("秒")); panel4.add(new Label("闹钟设置")); panel4.add(btStart); panel4.add(btStop); add(panel2); //增加组件到Applet上 add(panel3); add(panel4); btStart.addActionListener(new ActionListener(){ //打开闹钟按钮事件处理 public void actionPerformed(ActionEvent event){ turnOn=true; //设置打开标志为True } }); btStop.addActionListener(new ActionListener(){ //关闭闹钟按钮事件处理 public void actionPerformed(ActionEvent event){ turnOn=false; //设置打开标志为false } }); } public void start(){ if (alarm==null){ alarm=new Thread(this); //实例化线程 alarm.start(); //运行线程 } } public void run(){ while (alarm!=null){ try{ alarm.sleep(1000); //线程休眠一秒 } catch (InterruptedException ex){ } runAlarm(); //运行闹钟 } } private void runAlarm(){ Calendar now=new GregorianCalendar(); //得到日历对象 int hour=now.get(Calendar.HOUR_OF_DAY); //得到小时数 int minute=now.get(Calendar.MINUTE); //得到分数 int second=now.get(Calendar.SECOND); //得到分数 tfNowHour.setText(Integer.toString(hour)); //更新时间显示文本域 tfNowMinute.setText(Integer.toString(minute)); tfNowSecond.setText(Integer.toString(second)); if (turnOn){ //如果闹钟是打开的 int alarmHour=-1,alarmMinute=-1; String time=tfHour.getText(); //得到设置的闹钟小时数 if (time!=null && !time.equals("")) alarmHour=Integer.parseInt(time); time=tfMinute.getText(); if (time!=null && !time.equals("")) //得到设置的闹钟分钟数 alarmMinute=Integer.parseInt(time); if (alarmHour!=-1 && alarmMinute!=-1){ if (hour==alarmHour){ //比较时间 if (minute==alarmMinute){ AudioClip sound=getAudioClip(getDocumentBase(),"alarm.wav"); //取得声音文件 sound.play(); //播放声音 turnOn=false; } } } } } }