java钟表程序.doc

一个java的钟表程序import java.awt.*;import java.util.*;import javax.swing.*;import java.awt.event.*;public class Clock extends JPanelint CLOCK_RADIUS=200;int X_CENTER=300,Y_CENTER=300;static int second,minute,hour;static int year,month,day,week;int xSecond,ySecond;int xMinute,yMinute; int xHour,yHour;String timeStr,str1,str2,str3;static String dateStr;javax.swing.Timer timer;static String weekDisp=一,二,三,四,五,六,日;public Clock()setBackground(Color.white);setSize(800,800); ActionListener clockTik=new ActionListener() public void actionPerformed(ActionEvent ec) second+;if(second=60)second=0; minute+;if(minute=60) minute=0; hour+;if(hour=13) hour=1;repaint(); ; new javax.swing.Timer(1000,clockTik).start(); public void paint(Graphics g)int xPos,yPos;double alfa;super.paint(g); for(int i=0,num=12;i360;i+=6)alfa=Math.toRadians(i);xPos=X_CENTER+ (int)(CLOCK_RADIUS*Math.sin(alfa);yPos=Y_CENTER- (int)(CLOCK_RADIUS*Math.cos(alfa);if(i%30=0)if (num%3=0)g.setColor(Color.red); else g.setColor(Color.black); g.drawString(+num,xPos-5,yPos+3); num=(num+1)%12;elseg.setColor(Color.black);g.drawString(.,xPos,yPos); g.fillOval(X_CENTER-4,Y_CENTER-4,8,8); /表盘中心/画秒针xSecond=(int)(X_CENTER+(CLOCK_RADIUS-10)* Math.sin(second*(2*Math.PI/60);ySecond=(int)(Y_CENTER-(CLOCK_RADIUS-10)*Math.cos(second*(2*Math.PI/60);g.setColor(Color.red);g.drawLine(X_CENTER,Y_CENTER,xSecond,ySecond);/画分针xMinute=(int)(X_CENTER+(CLOCK_RADIUS-40)* Math.sin(minute+second/60)*(2*3.14/60);yMinute=(int)(Y_CENTER-(CLOCK_RADIUS-40)*Math.cos(minute+second/60)*(2*3.14/60);g.setColor(Color.red);g.drawLine(X_CENTER,Y_CENTER,xMinute,yMinute);/画时针xHour=(int)(X_CENTER+(CLOCK_RADIUS-70)* Math.sin(hour+minute/60+second/(60*60)*(2*3.14/12);yHour=(int)(Y_CENTER-(CLOCK_RADIUS-70)*Math.cos(hour+minute/60+second/(60*60)*(2*3.14/12);g.setColor(Color.red);g.drawLine(X_CENTER,Y_CENTER,xHour,yHour);/显示文字式样的时间if(hour10)str1=0+hour+:;elsestr1=hour+:;if(minute10)str2=0+minute+:;elsestr2=minute+:;if(second12) hour=hour-12;year=calendar.get(Calendar.YEAR);month=calendar.get(Calendar.MONTH)+1;day=calendar.get(Calendar.DAY_OF_MONTH);week=calendar.get(Calendar.DAY_OF_WEEK); dateStr=year+年+month+月+day+日 +星期+weekDispweek-1; Clo