java实现动态时钟并设置闹钟功能

java实现动态时钟并设置闹钟功能

本文实例为大家分享了java实现动态时钟设置闹钟功能，供大家参考，具体内容如下

显示如上图所示的动态时钟，并且可以设置闹钟，播放mp3。

首先用到的是时钟（Timer）和日历（Calendar）得到系统的当前时间。

代码如下：

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.geom.Ellipse2D;

import java.awt.geom.Line2D;

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.util.Calendar;

import java.util.GregorianCalendar;

import java.util.Timer;

import java.util.TimerTask;

import javax.media.CannotRealizeException;

import javax.media.Manager;

import javax.media.MediaLocator;

import javax.media.NoPlayerException;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javazoom.jl.player.Player;

public class Clock extends JFrame {

MyPanel clockPanel;

Ellipse2D.Double e;

int x;

int y;

Line2D.Double hourLine;

Line2D.Double minLine;

Line2D.Double secondLine;

GregorianCalendar calendar;

int hour;

int minute;

int second;

String timestr = "";

static int sethour;

static int setminute;

static int setsecond;

public static final int X = 60;

public static final int Y = 60;

public static final int X_BEGIN = 10;

public static final int Y_BEGIN = 10;

public static final int RADIAN = 50;

public Clock(){

setSize(300, 200);

setTitle("动态时钟");

clockPanel = new MyPanel();

add(clockPanel);

Timer t = new Timer();

Task task = new Task();

t.schedule(task, 0, 1000);//每秒刷新一次

}

File file = new File("当我想你的时候.mp3");

public static void playMusic(File file) { //显示mp3文件的绝对路径

try {

javax.media.Player player = null;

if (file.exists()) {

MediaLocator locator = new MediaLocator("file:"

+ file.getAbsolutePath());

System.out.println(file.getAbsolutePath());

player = Manager.createRealizedPlayer(locator);

player.prefetch();// Ԥ准备读取

player.start();// 开始读取

} else {

System.out.println("没找到文件");

}

} catch (CannotRealizeException ex) {

ex.printStackTrace();

} catch (NoPlayerException ex) {

ex.printStackTrace();

} catch (IOException ex) {

ex.printStackTrace();

}

}

public void play() {//播放mp3文件

try {

BufferedInputStream buffer = new BufferedInputStream(new FileInputStream("当我想你的时候.mp3"));

Player player = new Player(buffer);

player.play();

} catch (Exception e) {

System.out.println(e);

}

}

public static void main(String[] args) {

Clock t = new Clock();

t.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

t.setVisible(true);

//t.setLocationRelativeTo(null);//窗体显示在屏幕中央

//输入要设置的闹钟时间

sethour = Integer.parseInt(JOptionPane.showInputDialog("请输入小时："));

setminute = Integer.parseInt(JOptionPane.showInputDialog("请输入分钟："));

setsecond = Integer.parseInt(JOptionPane.showInputDialog("请输入秒："));

}

class MyPanel extends JPanel {

public MyPanel() {

e = new Ellipse2D.Double(X_BEGIN, Y_BEGIN, 100, 100);

hourLine = new Line2D.Double(X, Y, X, Y);

minLine = new Line2D.Double(X, Y, X, Y);

secondLine = new Line2D.Double(X, Y, X, Y);

}

public void paintComponent(Graphics g) {

super.paintComponent(g);

Graphics2D g2 = (Graphics2D) g;

g2.drawString("12", 55, 25);//整点时间

g2.drawString("6", 55, 105);

g2.drawString("9", 15, 65);

g2.drawString("3", 100, 65);

g2.drawString(timestr, 0, 130);

g2.draw(e);

g2.draw(hourLine);//时针

g2.draw(minLine);//分针

g2.draw(secondLine);//秒针

}

}

class Task extends TimerTask {

public void run() {

calendar = new GregorianCalendar();

hour = calendar.get(Calendar.HOUR);

minute = calendar.get(Calendar.MINUTE);

second = calendar.get(Calendar.SECOND);

if(sethour == hour && setminute == minute && setsecond == secondVoUaxVza){

playMusic(file);

play();

}

timestr = "当前时间：" + hour + " : " + minute + " : " + second;

hourLine.x2 = X + 40 * Math.cos(hour * (Math.PI / 6) - Math.PI / 2);

hourLine.y2 = Y + 40 * Math.sin(hour * (Math.PI / 6) - Math.PI / 2);

minLine.x2 = X + 45

* Math.cos(minute * (Math.PI / 30) - Math.PI / 2);

minLine.y2 = Y + 45

* Math.sin(minute * (Math.PI / 30) - Math.PI / 2);

secondLine.x2 = X + 50

* Math.cos(second * (Math.PI / 30) - Math.PI / 2);

secondLine.y2 = Y + 50

* Math.sin(second * (Math.PI / 30) - Math.PI / 2);

repaint();

}

}

}

其中播放mp3文件需要下载对应的jar包，否则不能播放。

下载地址：java实现动态时钟

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