一个简单的JAVA时钟小程序源代码

import java.util.*;import java.awt.*;import java.applet.*;import java.awt.event.*;import java.io.*;import javax.swing.*;class DrawclockPanel extends JPanel implements Runnable public Thread thread=null; public int hour; public int minutes; public int second; public int year; public int month; public int day; Image clockimage; int clockX; int clockY; public String Weekdays=new String 星期日,星期一,星期二,星期三,星期四,星期五,星期六; Image off1; Graphics offG; public void start() if(thread=null) thread=new Thread(this); thread.start(); public void run() while(thread!=null) repaint();tryThread.sleep(1000);catch(Exception e) public void paint(Graphics g1) super.paint(g1);Graphics2D g=(Graphics2D)g1;g.setColor(Color.black);for(int i=0;i60;i+)clockX=(int)(70*Math.sin(Math.PI/30*i)+127;clockY=(int)(140-70*Math.cos(Math.PI/30*i);if(i%5=0)g.fillOval(clockX-4,clockY-4,8,8);elseg.fillOval(clockX-2,clockY-2,4,4); Calendar calCurrent=Calendar.getInstance(); int weekday=calCurrent.get(Calendar.DAY_OF_WEEK); day=calCurrent.get(Calendar.DATE); month =calCurrent.get(Calendar.MONTH)+1; year=calCurrent.get(Calendar.YEAR); hour=calCurrent.get(Calendar.HOUR_OF_DAY); minutes=calCurrent.get(Calendar.MINUTE); second=calCurrent.get(Calendar.SECOND); int hourX=(int)(Math.sin(Math.PI/6.0*(hour%12+ (float)minutes/60)*50)+127; int hourY=140-(int)(Math.cos(Math.PI/6.0*(hour%12+(float)minutes/60)*50); int secondX=(int)(Math.sin(Math.PI/30.0*second)*70)+127; int secondY=140-(int)(Math.cos(Math.PI/30.0*second)*70); int minutesX=(int)(Math.sin(Math.PI/30.0*minutes)*60)+127; int minutesY=140-(int)(Math.cos(Math.PI/30.0*minutes)*60); g.setColor(Color.magenta); g.setFont(new Font(Curier,20,20); g.drawString(今天是+year+-+month+-+day+Weekdaysweekday-1, 0, 20); g.drawString(现在时刻 +hour+:+minutes+:+second, 0, 40); g.setStroke(new BasicStroke(3.0f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND); g.setColor(Color.red); g.drawLine(127, 140, hourX, hourY); g.setColor(Color.blue); g.drawLine(127, 140, minutesX, minutesY); g.setColor(Color.green); g.drawLine(127,140,secondX,secondY); public class Drawclockpublic static void main(String args)JFrame frame=new JFrame();frame.setTitle(钟表);DrawclockPanel panel=new DrawclockPanel();frame.add(panel);panel.start();frame.setVisible(true);frame.setSi