關(guān)于鬧鐘的java代碼 鬧鐘源代碼

Java建立一個鬧鐘廠,鬧鐘屬性:形狀、顏色、時間(設(shè)置為整型)鬧鐘行為:響鈴,設(shè)?

代碼如下:

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import java.awt.BorderLayout;

import java.awt.FlowLayout;

import java.awt.Font;

import java.awt.Frame;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.io.IOException;

import java.text.DateFormat;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Timer;

import java.util.TimerTask;

import javax.sound.sampled.AudioInputStream;

import javax.sound.sampled.AudioSystem;

import javax.sound.sampled.Clip;

import javax.sound.sampled.LineEvent;

import javax.sound.sampled.LineListener;

import javax.sound.sampled.LineUnavailableException;

import javax.sound.sampled.UnsupportedAudioFileException;

import javax.swing.JButton;

import javax.swing.JDialog;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

/**

* 鬧鐘主界面

*/

public class AlarmClock extends JFrame implements ActionListener {

private static final int LOOP_COUNT = 5; // 重復(fù)播放的次數(shù)

private JLabel labelClock, labelAlarm, labelNextAlarm;

private JButton btnSet, btnClose;

private SetDialog setDialog;

private JPanel topPanel, alarmPanel;

private Timer timer;

private Clip clip;

private Calendar alarmCal;

private boolean timeReached = true;

private DateFormat df = new SimpleDateFormat(

用JAVA編一個小鬧鐘

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

import javax.swing.Timer;

public class Clock extends JFrame implements ActionListener {

public final int HEIGTH = 200, L0 = 50, T0 = 50,N=8;

public final double RAD = Math.PI / 180.0;

int x, y, old_X, old_Y, r, x0, y0, w, h, ang;

int sdo, mdo, hdo, old_M, old_H, hh, mm, ss;

int delay = 1000;

Calendar now;

String st, alarm, Items1, Items2,str[];

JButton jb;

JComboBox jc1, jc2, jc3;

JLabel jl1, jl2, jl3, jl4;

JMenu jm1, jm2, jm3, jm4;

JMenuBar jmb;

JMenuItem jmi1, jmi2, jmi3, jmi4, jmi5, jmi6, jmi7, jmi8, jmi9,jmi10;

JTextField jtf1, jtf2, time;

JPanel jp1, jp2, jp3;

Timer timer;

TimeZone tz = TimeZone.getTimeZone("JST");

Toolkit toolkit=Toolkit.getDefaultToolkit();;

/**

* br

* 方法說明:實現(xiàn)ActionListener類必須過載的方法

*/

public static void main(String[] args) {

Clock cp = new Clock();

cp.setVisible(true);

}

Clock() {

super("Java鬧鐘!");

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

setSize(550, 700);

setVisible(true);

Container contentPane = getContentPane();

jp2 = new JPanel();

jmb = new JMenuBar();

jm1 = new JMenu("背景顏色設(shè)置 ", true);

jmi1 = new JMenuItem("外圈顏色");

jmi1.addActionListener(this);

jmi1.setActionCommand("color1");

jm1.add(jmi1);

jmi2 = new JMenuItem("鬧鐘邊線顏色");

jmi2.addActionListener(this);

jmi2.setActionCommand("color2");

jm1.add(jmi2);

jmi3=new JMenuItem("底盤顏色");

jmi3.addActionListener(this);

jmi3.setActionCommand("color3");

jm1.add(jmi3);

jmi4=new JMenuItem("系統(tǒng)時間背靜顏色");

jmi4.addActionListener(this);

jmi4.setActionCommand("color4");

jm1.add(jmi4);

jmb.add(jm1);

jm2 = new JMenu("指針顏色設(shè)置 ", true);

jmi5 = new JMenuItem("秒針顏色");

jmi5.addActionListener(this);

jmi5.setActionCommand("color5");

jm2.add(jmi5);

jmi6 = new JMenuItem("分針顏色");

jmi6.addActionListener(this);

jmi6.setActionCommand("color6");

jm2.add(jmi6);

jmi7 = new JMenuItem("時針顏色");

jmi7.addActionListener(this);

jmi7.setActionCommand("color7");

jm2.add(jmi7);

jmb.add(jm2);

jm3 = new JMenu("鬧鈴聲音設(shè)置 ", true);

jmi8 = new JMenuItem("響鈴1");

jmi8.addActionListener(this);

jmi8.setActionCommand("ring1");

jm3.add(jmi8);

jmi9 = new JMenuItem("靜音");

jmi9.addActionListener(this);

jmi9.setActionCommand("ring2");

jm3.add(jmi9);

jmb.add(jm3);

jm4 = new JMenu("幫助 ", true);

jmi10=new JMenuItem("使用說明");

jmi10.addActionListener(this);

jmi10.setActionCommand("help");

jm4.add(jmi10);

jmb.add(jm4);

jp2.add(jmb);

contentPane.add(jp2, BorderLayout.NORTH);

jp3 = new JPanel();

jl1 = new JLabel("鬧鈴時間");

jl1.setFont(new Font("楷體_GB2312", Font.BOLD, 18));

time = new JTextField("00:00", 5);

alarm = time.getText();

jb = new JButton("修改鬧鈴時間");

jb.addActionListener(this);

jb.setActionCommand("CC");

jp3.add(jl1);

jp3.add(time);

jp3.add(jb);

contentPane.add(jp3, BorderLayout.SOUTH);

ClockPanel clock = new ClockPanel();

contentPane.add(clock, BorderLayout.CENTER);

// 窗體添加事件監(jiān)聽,監(jiān)聽秒表的觸發(fā)

ActionListener taskPerformer = new ActionListener() {

public void actionPerformed(ActionEvent evt) {

repaint();

}

};

new Timer(delay, taskPerformer).start();

}

/**

* br

* 方法說明:繪制圖形

*/

Color C1 = Color.lightGray;// 外圈顏色

Color C2 = Color.black;// 邊線顏色

Color C3 = Color.magenta;// 內(nèi)盤顏色

Color C4 = Color.blue;// 背景顏色

Color C5 = Color.yellow;// 秒針顏色

Color C6 = Color.green;// 分針顏色

Color C7 = Color.red;//時針顏色

public class ClockPanel extends JPanel {

public void paint(Graphics g) {

h = getSize().height - 200;

// 繪制圓形

g.setColor(C1);

g.fillOval(L0 + 30, T0 + 30, h - 60, h - 60);

g.setColor(C2);

g.drawOval(L0 + 31, T0 + 31, h - 62, h - 62);

g.setColor(C3);

g.fillOval(L0 + 50, T0 + 50, h - 100, h - 100);

g.setColor(C2);

g.drawOval(L0 + 51, T0 + 51, h - 102, h - 102);

r = h / 2 - 30;

x0 = 30 + r - 5 + L0;

y0 = 30 + r - 5 - T0;

ang = 60;

for (int i = 1; i = 12; i++) {

x = (int) ((r - 10) * Math.cos(RAD * ang) + x0);

y = (int) ((r - 10) * Math.sin(RAD * ang) + y0);

g.drawString("" + i, x, h - y);

ang -= 30;

}

x0 = 30 + r + L0;

y0 = 30 + r + T0;

g.drawString("指針式時鐘", 215, 200);

// 獲取時間

now = Calendar.getInstance();

hh = now.get(Calendar.HOUR_OF_DAY);// 小時

mm = now.get(Calendar.MINUTE);// 分鐘

ss = now.get(Calendar.SECOND);// 秒

g.setColor(C4);

g.fillRect(5, 550, 150, 30);// 填充的矩形

g.setColor(C6);

if (hh 10)

st = "0" + hh;

else

st = "" + hh;

if (mm 10)

st = st + ":0" + mm;

else

st = st + ":" + mm;

if(alarm.equals(st))

{

if(toolkit!=null)

toolkit.beep();

else {}

}

if (ss 10)

st = st + ":0" + ss;

else

st = st + ":" + ss;

{

g.setFont(new Font("華文楷體", Font.BOLD, 16));

g.drawString("系統(tǒng)時間:" + st, 10, 570);

}

// 計算時間和圖形的關(guān)系

sdo = 90 - ss * 6;

mdo = 90 - mm * 6;

hdo = 90 - hh * 30 - mm / 2;

// 擦除秒針

if (old_X 0) {

g.setColor(C3);

} else {

old_M = mdo;

old_H = hdo;

}

// 繪制秒針

g.setColor(C5);

x = (int) ((r - 26) * Math.cos(RAD * sdo) + x0);

y = (int) ((r - 26) * Math.sin(RAD * sdo) + y0) - 2 * T0;

g.drawLine(x0, y0, x, (h - y));

old_X = x;

old_Y = y;

// 擦除分針和時針

if (mdo != old_M) {

g.setColor(C3);

old_M = mdo;

}

if (hdo != old_H) {

g.setColor(C3);

old_H = hdo;

}

// 繪制分針

g.setColor(C6);

x = (int) ((r - 50) * Math.cos(RAD * mdo) + x0);

y = (int) ((r - 50) * Math.sin(RAD * mdo) + y0) - 2 * T0;

g.drawLine(x0, y0, x, (h - y));

// 繪制時針

g.setColor(C7);

x = (int) ((r - 90) * Math.cos(RAD * hdo) + x0);

y = (int) ((r - 90) * Math.sin(RAD * hdo) + y0) - 2 * T0;

g.drawLine(x0, y0, x, (h - y));

} // end paint

}

// 鬧鈴時間的判斷及實現(xiàn)

// 鬧鈴聲音的實現(xiàn)

public void actionPerformed(ActionEvent e) {

// JMenuItem m = (JMenuItem) e.getSource();

if (e.getActionCommand() == "CC") {

int newHou, newMin;

char c;

String getTime = JOptionPane.showInputDialog(this, "請輸入鬧鈴時間格式如:", "00:00");

repaint();

//如果撤消設(shè)置時間,就什么打印null

if(getTime==null)

System.out.println(getTime);

// dispose();

judge: if (getTime != null) {

//打印輸入的設(shè)置的時間

System.out.println(getTime);

// 判斷輸入的是不是5位字符

if (getTime.length() != 5) {

JOptionPane.showMessageDialog(time, "格式錯誤\n請按格式輸入5位數(shù)字", "Error",

JOptionPane.ERROR_MESSAGE);

repaint();

break judge;

}

// 判斷輸入的是不是數(shù)字

for (int i = 0; i (getTime.length()); i++) {

c = getTime.charAt(i);

if (i == 2 !Character.isDigit(c))

continue;

// 判斷當(dāng)前字符,如果不是數(shù)字則跳出該事件

if (i != 2 !Character.isDigit(c)) {

JOptionPane.showMessageDialog(this, "格式錯誤\n請按格式輸入5位數(shù)字",

"Error",JOptionPane.ERROR_MESSAGE);

repaint();

break judge;

}

}

char[] hour = { getTime.charAt(0), getTime.charAt(1) };

char[] minute = { getTime.charAt(3), getTime.charAt(4) };

newHou = Integer.parseInt(String.valueOf(hour));

newMin = Integer.parseInt(String.valueOf(minute));

if (newHou = 24 || newHou 0) {

JOptionPane.showMessageDialog(this, "格式錯誤\n小時應(yīng)該是不小于0不大于23的正數(shù)",

"Error", JOptionPane.ERROR_MESSAGE);

repaint();

break judge;

}

if (newMin = 60 || newHou 0) {

JOptionPane.showMessageDialog(this, "格式錯誤\n分鐘應(yīng)該是小于60的正數(shù)", "Error",

JOptionPane.ERROR_MESSAGE);

repaint();

break judge;

}

new SetTime(newHou, newMin);

}

}

if (e.getActionCommand() == "ring1") {

toolkit=Toolkit.getDefaultToolkit();

}

if(e.getActionCommand() == "ring2"){

System.out.println("靜音");

toolkit=null;

}

if (e.getActionCommand() == "color1") {

String color;

Color c;

System.out.println("color1");

color = JOptionPane.showInputDialog(this, "請輸入喜歡的外圈顏色(0--255)", "128");

if (color == null) {

} else {

if (Integer.parseInt(color) 0

|| Integer.parseInt(color) 255)

JOptionPane.showInputDialog(this, "請輸入喜歡的外圈顏色(0--255)", "128");

else {

c = new Color(Integer.parseInt(color));

C1 = c;

}

}

}

if(e.getActionCommand() == "color2"){

String color;

Color c;

System.out.println("color2");

color = JOptionPane.showInputDialog(this, "請輸入喜歡的邊線顏色(0--255)", "128");

if(color==null){}

else{if (Integer.parseInt(color) 0|| Integer.parseInt(color) 255)

JOptionPane.showInputDialog(this, "請輸入喜歡的邊線顏色(0--255)", "128");

else {

c = new Color(Integer.parseInt(color));

C2 = c;

}

}

}

if(e.getActionCommand() == "color3"){

String color;

Color c;

System.out.println("color3");

color = JOptionPane.showInputDialog(this, "請輸入喜歡的內(nèi)盤顏色(0--255)", "128");

if(color==null){}

else{if (Integer.parseInt(color) 0|| Integer.parseInt(color) 255)

JOptionPane.showInputDialog(this, "請輸入喜歡的內(nèi)盤顏色(0--255)", "128");

else {

c = new Color(Integer.parseInt(color));

C3 = c;

}

}

}

if(e.getActionCommand() == "color4"){

String color;

Color c;

System.out.println("color4");

color = JOptionPane.showInputDialog(this, "請輸入喜歡的背景顏色(0--255)", "128");

if(color==null){}

else{if (Integer.parseInt(color) 0|| Integer.parseInt(color) 255)

JOptionPane.showInputDialog(this, "請輸入喜歡的背景顏色(0--255)", "128");

else {

c = new Color(Integer.parseInt(color));

C4 = c;

}

}

}

if(e.getActionCommand() == "color5"){

String color;

Color c;

System.out.println("color5");

color = JOptionPane.showInputDialog(this, "請輸入喜歡的秒針顏色(0--255)", "128");

if(color==null){}

else{if (Integer.parseInt(color) 0|| Integer.parseInt(color) 255)

JOptionPane.showInputDialog(this, "請輸入喜歡的秒針顏色(0--255)", "128");

else {

c = new Color(Integer.parseInt(color));

C5 = c;

}

}

}

if(e.getActionCommand() == "color6"){

String color;

Color c;

System.out.println("color6");

color = JOptionPane.showInputDialog(this, "請輸入喜歡的分針顏色(0--255)", "128");

if(color==null){}

else{if (Integer.parseInt(color) 0|| Integer.parseInt(color) 255)

JOptionPane.showInputDialog(this, "請輸入喜歡的分針顏色(0--255)", "128");

else {

c = new Color(Integer.parseInt(color));

C6 = c;

}

}

}

if(e.getActionCommand() == "color7"){

String color;

Color c;

System.out.println("color7");

color = JOptionPane.showInputDialog(this, "請輸入喜歡的時針顏色(0--255)", "128");

if(color==null){}

else{if (Integer.parseInt(color) 0|| Integer.parseInt(color) 255)

JOptionPane.showInputDialog(this, "請輸入喜歡的時針顏色(0--255)", "128");

else {

c = new Color(Integer.parseInt(color));

C7 = c;

}

}

}

if(e.getActionCommand() == "help"){

String help;

help = JOptionPane.showInputDialog(this, "輸入quit退出該鬧鐘的使用", "這是運行在Java中的指針式時鐘");

if(help.equals("quit"))

dispose();

else {}

// timer.restart();

}

}

class SetTime {

String Hour;

String Minute;

public SetTime() { }

public SetTime(int hour, int minute) {

// 當(dāng)時間參數(shù)小于10的時候在前面添加字符0

if (hour 10) {

Hour = "0" + String.valueOf(hour);

} else {

Hour = "" + String.valueOf(hour);

}

if (minute 10) {

Minute = "0" + String.valueOf(minute);

} else {

Minute = "" + String.valueOf(minute);

}

alarm = Hour + ":" + Minute;

time.setText(alarm);

repaint();

}

}

}

JAVA 鬧鐘程序

import java.util.*;

import java.awt.*;

import java.applet.*;

import java.text.*;

import java.awt.event.*;

public class Alarm extends Applet implements Runnable

{

Thread timer=null; //創(chuàng)建線程timer

Image gif1; //clockp:鬧鐘的外殼,鬧鈴和報時物

boolean setflag=false,stopflag=false,cancelflag=false;

Panel setpanel;

//獲取聲音文件

AudioClip ring=getAudioClip(getCodeBase(), "1.mid");

Button setbutton=new Button("SET");

Button cancelbutton=new Button("CANCEL");

Button stopbutton=new Button("STOP");

//響應(yīng)按鈕事件

private ActionListener setli=new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

setflag=true;

}

};

private ActionListener cancelli=new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

setflag=true;

}

};

private ActionListener stopli=new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

ring.stop();

//清除的方法

//g.clearRect(83,280,20,30);

}

};

Label note1=new Label("Alarm clock:");

//GregorianCalendar提供的是一個日歷式的東東,上面又多了很多的參數(shù),是方便操作了不少。而Date類的功能遠不及其,求個和日期有聯(lián)系的還要自己計算。

GregorianCalendar cal=new GregorianCalendar();

GregorianCalendar cal2=new GregorianCalendar();

SimpleDateFormat df=new SimpleDateFormat("yyyy MM dd HH:mm:ss");//設(shè)置時間格式

Date dummy=new Date(); //生成Data對象

String lastdate=df.format(dummy);

Font F=new Font("TimesRoman",Font.PLAIN,14);//設(shè)置字體格式

Date dat=null;

Date timeNow;

Color fgcol=Color.blue;

Color fgcol2=Color.darkGray;

Color backcolor=Color.blue;

Label hlabel2,mlabel2,slabel2;//顯示時間單位時所用的標(biāo)簽(時、分、秒)

int i;

int s,m,h;

TextField sethour,setmin,setsec;//顯示當(dāng)前時間文本框和定時文本框

//在Applet程序中,首先自動調(diào)用初始化完成必要的初始化工作,緊接著自動調(diào)用start,在進入執(zhí)行程序和返回到該頁面時被調(diào)用,而從該頁面轉(zhuǎn)到別的頁面時,stop被調(diào)用,關(guān)閉瀏覽器時,執(zhí)行destroy。

public void init()//初始化方法

{

int fieldx=50,fieldy1=120,fieldy2=220,fieldw=30,fieldh=20,space=50;//顯示時間和定時文本框的定位參數(shù)

setLayout(null); //將布局管理器初始化為null

setpanel=new Panel();

setpanel.setLayout(null);

setpanel.add(note1);

note1.setBounds(30,100,60,20);

note1.setBackground(backcolor);

note1.setForeground(Color.black);

//定時用的文本框(時、分、秒)

sethour=new TextField("00",5);

setmin=new TextField("00",5);

setsec=new TextField("00",5);

hlabel2=new Label();

mlabel2=new Label();

slabel2=new Label();

//定時的小時文本框的位置、大小

setpanel.add(sethour);

sethour.setBounds(fieldx,fieldy2,fieldw,fieldh);

sethour.setBackground(Color.white);

//在文本框后加入單位“時”

setpanel.add(hlabel2);

hlabel2.setText("h");

hlabel2.setBackground(backcolor);

hlabel2.setForeground(Color.black);

hlabel2.setBounds(fieldx+fieldw+3,fieldy2,14,20);

fieldx=fieldx+space;

//定時的分鐘文本框的位置、大小

setpanel.add(setmin);

setmin.setBounds(fieldx,fieldy2,fieldw,fieldh);

setmin.setBackground(Color.white);

//在文本框后加入單位“分”

setpanel.add(mlabel2);

mlabel2.setText("m");

mlabel2.setBackground(backcolor);

mlabel2.setForeground(Color.black);

mlabel2.setBounds(fieldx+fieldw+3,fieldy2,14,20);

fieldx=fieldx+space;

//定時的秒文本框的位置、大小

setpanel.add(setsec);

setsec.setBounds(fieldx,fieldy2,fieldw,fieldh);

setsec.setBackground(Color.white);

//在文本框后加入單位“秒”

setpanel.add(slabel2);

slabel2.setText("s");

slabel2.setBackground(backcolor);

slabel2.setForeground(Color.black);

slabel2.setBounds(fieldx+fieldw+3,fieldy2,14,20);

//設(shè)置鬧鐘控制按鈕(on,off)

setpanel.add(cancelbutton);

setpanel.add(setbutton);

setpanel.add(stopbutton);

cancelbutton.setBounds(90,180,40,20);

setbutton.setBounds(140,180,40,20);

stopbutton.setBounds(522,180,40,20);

setbutton.addActionListener(setli);

cancelbutton.addActionListener(cancelli);

stopbutton.addActionListener(stopli);

stopbutton.setVisible(false);

//將面板加入當(dāng)前容器中,并設(shè)置面板的大小和背景色

add(setpanel);

setpanel.setBounds(300,1,250,420);

setpanel.setBackground(backcolor);

/*int xcenter,ycenter,s,m,h;

//鬧鐘中心點所在位置

xcenter=145;

ycenter=162;

s=(int)cal.get(Calendar.SECOND);

m=(int)cal.get(Calendar.MINUTE);

h=(int)cal.get(Calendar.HOUR_OF_DAY);

//初始化指針位置

lastxs=(int)(Math.cos(s*3.14f/30-3.14f/2)*30+xcenter);

lastys=(int)(Math.sin(s*3.14f/30-3.14f/2)*30+ycenter);

lastxm=(int)(Math.cos(m*3.14f/30-3.14f/2)*25+xcenter);

lastym=(int)(Math.sin(m*3.14f/30-3.14f/2)*25+ycenter);

lastxh=(int)(Math.cos((h*30+m/2)*3.14f/180-3.14f/2)*18+xcenter);

lastyh=(int)(Math.sin((h*30+m/2)*3.14f/180-3.14f/2)*18+ycenter);

lasts=s; */

MediaTracker mt=new MediaTracker(this);//為給定組件創(chuàng)建一個跟蹤媒體的MediaTracker對象,把圖片添加到被跟蹤的圖片組

//Java允?Sapplet??HTML所在的位置(decument base)下?d?Y料,也允?Sapplet?鈉涑淌醬a所在的位置(code base)下?d?Y料。藉由呼叫g(shù)etDocumentBase()?cgotCodeBase()可得到URL物件。?@些函?????湍閼業(yè)僥閬胂螺d的?n案的位置

//clockp=getImage(getDocumentBase(),"11.png");

gif1=getImage(getCodeBase(),"2.gif");

//i為id號

mt.addImage(gif1,i++);

try

{

mt.waitForAll();

}

catch(InterruptedException e)

{};//等待加載結(jié)束

resize(600,420);//設(shè)置窗口大小

}

//窗口顯示有改變的時候調(diào)用paint

public void paint(Graphics g)

{//重寫paint()方法

int xh,yh,xm,ym,xs,ys,strike_times;

int xcenter,ycenter;

String today;

xcenter=148;

ycenter=186;

dat=new Date();

//用當(dāng)前時間初始化日歷時間

cal.setTime(dat);

//讀取當(dāng)前時間

s=(int)cal.get(Calendar.SECOND);

m=(int)cal.get(Calendar.MINUTE);

h=(int)cal.get(Calendar.HOUR_OF_DAY);

//換一種時間表達形式

today=df.format(dat);

//指針位置

xs=(int)(Math.cos(s*3.14f/30-3.14f/2)*30+xcenter);

ys=(int)(Math.sin(s*3.14f/30-3.14f/2)*30+ycenter);

xm=(int)(Math.cos(m*3.14f/30-3.14f/2)*25+xcenter);

ym=(int)(Math.sin(m*3.14f/30-3.14f/2)*25+ycenter);

xh=(int)(Math.cos((h*30+m/2)*3.14f/180-3.14f/2)*12+xcenter);

yh=(int)(Math.sin((h*30+m/2)*3.14f/180-3.14f/2)*12+ycenter);

//設(shè)置字體和顏色

g.setFont(F);

//前景色

g.setColor(getBackground()); //取背景色的

g.drawImage(gif1,75,110,this);

//以數(shù)字方式顯示年、月、日和時間

g.drawString(today,55,415);

//畫指針

g.drawLine(xcenter,ycenter,xs,ys);

g.drawLine(xcenter,ycenter-1,xm,ym); //(x1,y1,x2,y2)

g.drawLine(xcenter-1,ycenter,xm,ym);

g.drawLine(xcenter,ycenter-1,xh,yh);

g.drawLine(xcenter-1,ycenter,xh,yh);

int timedelta;//記錄當(dāng)前時間與鬧鈴定時的時差

Integer currh,currm,currs;//分別記錄當(dāng)前的時、分、秒

Date dat2=new Date();

cal2.setTime(dat2);

//讀取當(dāng)前時間

currh=(int)cal2.get(Calendar.SECOND);

currm=(int)cal2.get(Calendar.MINUTE);

currs=(int)cal2.get(Calendar.HOUR_OF_DAY);

//這樣做的話說我API已過時

//timeNow=new Date();

//currh=new Integer(timeNow.getHours());

//currm=new Integer(timeNow.getMinutes());

//currs=new Integer(timeNow.getSeconds());

if(setflag)

{ //判斷是否設(shè)置了鬧鐘

//判斷當(dāng)前時間是否為鬧鐘所定的時間

if((currh.intValue()==Integer.valueOf(sethour.getText()).intValue())(currm.intValue()==Integer.valueOf(setmin.getText()).intValue())(currs.intValue()==Integer.valueOf(setsec.getText()).intValue()))

{

ring.play();

g.drawImage(gif1,83,280,this);

stopbutton.setVisible(true);

}

timedelta=currm.intValue()*60+currs.intValue()-Integer.valueOf(setmin.getText()).intValue()*60-Integer.valueOf(setsec.getText()).intValue();

if((timedelta=30))

{

//若當(dāng)前時間與鬧鐘相差時間超過30秒,鬧鐘自動停

ring.stop();

//清除的方法

g.clearRect(83,280,20,30);

}

}

dat=null;

}

public void start()

{

if(timer==null)

{

timer=new Thread(this);//將timer實例化

timer.start();

}

}

public void stop()

{

timer=null;

}

//給創(chuàng)建線程后start之后自動執(zhí)行的函數(shù)

public void run()

{

//在run()方法中,調(diào)用repaint()方法,以重繪小程序區(qū),進行時鐘顯示的更新。接著調(diào)用sleep方法讓當(dāng)前線程(也就是我們創(chuàng)建的線程clockthread)睡眠1000毫秒,因為我們每秒鐘要更新一下顯示,所以讓它睡眠1秒

while(timer!=null)

{

try

{

timer.sleep(1000);

}

catch(InterruptedException e)

{}

//調(diào)用repaint時,會首先清除掉paint方法之前的畫的內(nèi)容,再調(diào)用paint方法

repaint();//刷新畫面

}

timer=null;

}

//當(dāng)AWT接收到一個applet的重繪請求時,它就調(diào)用applet的 update(),默認(rèn)地,update() 清除applet的背景,然后調(diào)用 paint()。重載 update(),將以前在paint()中的繪圖代碼包含在update()中,從而避免每次重繪時將整個區(qū)域清除

//有兩種方法可以明顯地減弱閃爍:重載 update()或使用雙緩沖。

//使用雙緩沖技術(shù):另一種減小幀之間閃爍的方法是使用雙緩沖,它在許多動畫Applet中被使用。其主要原理是創(chuàng)建一個后臺圖像,將需要繪制的一幀畫入圖像,然后調(diào)用DrawImage()將整個圖像一次畫到屏幕上去;好處是大部分繪制是離屏的,將離屏圖像一次繪至屏幕上比直接在屏幕上繪制要有效得多,大大提高做圖的性能。

// 雙緩沖可以使動畫平滑,但有一個缺點,要分配一張后臺圖像,如果圖像相當(dāng)大,這將需要很大一塊內(nèi)存;當(dāng)你使用雙緩沖技術(shù)時,應(yīng)重載 update()。

public void update(Graphics g)

{

Image offscreen_buf=null;

//采用雙緩沖技術(shù)的update()方法

if(offscreen_buf==null)

offscreen_buf=createImage(600,420);

Graphics offg=offscreen_buf.getGraphics();

offg.clipRect(1,1,599,419);

paint(offg);

Graphics ong=getGraphics();

ong.clipRect(1,1,599,419);

ong.drawImage(offscreen_buf,0,0,this);

}

/** Creates a new instance of AlarmClock */

}

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