javaSwing实现万年历和时钟

 在学完javaswing的编程后，我自己动手实现了一个万年历和时钟。以下是我实现的代码：

1、DrawClock类：

package calender;

import java.awt.Color;
import java.awt.Graphics;
import java.util.Date;

import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.TitledBorder;

public class DrawClock extends JPanel implements Runnable {

 Thread newThread;
 public static int RADIUS=80;
 public int centerX=150;
 public int centerY=120;
 
 public int hr,min,sec;
 public int[] xPoint=new int[4];
 public int[] yPoint=new int[4];
 public double hrAlpha,minAlpha,secAlpha,theta;
 
 private JTextField timezone;
 
 public void start(){
  newThread=new Thread(this);
  newThread.start();
 }
 
 public void stop(){
  newThread=null;
 }
 
 public void paint(Graphics g){
  super.paint(g);
  //画出刻度
  double minuteAlpha = Math.PI/30.0;
  int count =0;
  for(double alpha=0;alpha<2.0*Math.PI;alpha+=minuteAlpha){
   int tX= (int)(centerX+RADIUS*0.9*Math.sin(alpha));
   int tY= (int)(centerY-RADIUS*0.9*Math.cos(alpha));
   if(count%5==0){
    g.setColor(Color.BLUE);
    g.fill3DRect(tX, tY, 3, 3, false);
    if(count%3==0){
     g.setColor(Color.RED);
     int m=count/15;
     switch(m){
     case 1:g.drawString("3", centerX+RADIUS-18,centerY+5);
     break;
     case 2:g.drawString("6", centerX-3, centerY+RADIUS-10);
     break;
     case 3:g.drawString("9", centerX-RADIUS+11, centerY+6);
     break;
     default :g.drawString("12", centerX-5, centerY-RADIUS+22);
     }
    }
   }else{
    g.setColor(Color.GRAY);
    g.fill3DRect(tX, tY, 2, 2, false);
   }
   count++;
  }
  //画出时针
  g.setColor(Color.gray);
  drawPointer(g,centerX+2,centerY+2,(int)(RADIUS*0.75),hrAlpha);
  g.setColor(Color.CYAN);
  drawPointer(g,centerX,centerY,(int)(RADIUS*0.75),hrAlpha);
  //画出分针
  g.setColor(Color.GRAY);
  drawPointer(g,centerX+2,centerY+2,(int)(RADIUS*0.83),minAlpha);
  g.setColor(Color.CYAN);
  drawPointer(g,centerX,centerY,(int)(RADIUS*0.83),minAlpha);
  //画出秒针
  g.setColor(Color.GRAY);
  g.drawLine(centerX, centerY, (int)(centerX+(RADIUS*0.79)*Math.sin(secAlpha)), (int)(centerY-(RADIUS*0.79)*Math.cos(secAlpha)));
  setBorder(new TitledBorder("系统时间"));
  setBackground(Color.WHITE);
  
  g.drawRect(85, 210, 130, 20); 
  g.setColor(Color.WHITE);
  g.setColor(Color.DARK_GRAY);
  
  Date nowDate =new Date();
  g.drawString(nowDate.toLocaleString(), 100, 225);
  
 }
 //得到系统时间
 public Date getDate(){
  Date nowDate =new Date();
  return nowDate;
 }
 //刷新图层
 public void update(Graphics g){
   paint(g);
 }

 public void run() {
  while(newThread!=null){
   repaint();
   try {
    Thread.sleep(800);
   } catch (InterruptedException e) {
    e.printStackTrace();
   }
   Date timeNow =new Date();
   int hours=timeNow.getHours();
   int minutes=timeNow.getMinutes();
   int seconds =timeNow.getSeconds();
   hr=hours%12;
   min=minutes;
   sec=seconds;
   
   theta=Math.PI/6.0/20.0 ;
   
   hrAlpha=(double)(hr*3600+min*60+sec)/(12*3600.0)*2.0*Math.PI;
   minAlpha=(double)(min*60+sec)/3600.0*2.0*Math.PI;
   secAlpha =(double)(sec)/60.0*2.0*Math.PI;
   
  }
 }
 private void drawPointer(Graphics g, int x, int y, int len, double theta) {
  xPoint[0]=(int)(x+len*0.3*Math.sin(theta-Math.PI));
  yPoint[0]=(int)(y-len*0.3*Math.cos(theta-Math.PI));
  xPoint[1]=(int)(xPoint[0]+len*0.3*Math.sin(theta-(5.0/180)*Math.PI));
  yPoint[1]=(int)(yPoint[0]-len*0.3*Math.cos(theta-(5.0/180)*Math.PI));
  xPoint[2]=(int)(xPoint[0]+len*Math.sin(theta));
  yPoint[2]=(int)(yPoint[0]-len*Math.cos(theta));
  xPoint[3]=(int)(xPoint[0]+len*0.3*Math.sin(theta+(5.0/180)*Math.PI));
  yPoint[3]=(int)(yPoint[0]-len*0.3*Math.cos(theta+(5.0/180)*Math.PI));
  
  g.fillPolygon(xPoint, yPoint,4);
 }
}
 

2、日历类：

package calender;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Date;
import java.util.GregorianCalendar;

import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.TitledBorder;

public class Calender extends JPanel implements ActionListener {
 public static final String HOUR_OF_DAY=null;
 JComboBox yearCom=new JComboBox();
 JComboBox monthCom = new JComboBox();
 JLabel year_i=new JLabel("年");
 JLabel month_i=new JLabel("月");
 Date nowDate =new Date();
 JLabel[]  labDay= new JLabel[49];
 int now_year=nowDate.getYear()+1900;
 int now_month=nowDate.getMonth();
 
 boolean  bool =false;
 String year_int=null;
 int month_int=0;
 JPanel paneYM=new JPanel();
 JPanel paneDay =new JPanel();
 public Calender(){
  super();
  for(int year=now_year-30;year<=now_year+30;year++){
   yearCom.addItem(year+"");
   
  }
  for(int i=1;i<13;i++){
   monthCom.addItem(i+"");
  }
  yearCom.setSelectedIndex(30);
  paneYM.add(new JLabel(" "));
  paneYM.add(yearCom);
  paneYM.add(year_i);
  monthCom.setSelectedIndex(now_month);
  paneYM.add(monthCom);
  paneYM.add(month_i);
  paneYM.add(new JLabel(" "));
  
  monthCom.addActionListener( this);
  yearCom.addActionListener(this);
  
  paneDay.setLayout(new GridLayout(7,7,10,10));
  for(int i=0;i<49;i++){
   labDay[i] =new JLabel("  ");
   paneDay.add(labDay[i]);
  }
  this.setDay();
  this.setLayout(new BorderLayout());
  this.add(paneDay,BorderLayout.CENTER);
  this.add(paneYM,BorderLayout.NORTH);
  this.setSize(100,200);
  this.setBorder(new TitledBorder("日历"));
  setSize(300,300);
 }
 //设置日历中的日期
  void setDay() {
  if(bool){
   year_int=now_year+"";
   month_int=now_month;
   
  }else{
   year_int=yearCom.getSelectedItem().toString();
   month_int=monthCom.getSelectedIndex();
  }
  int year_sel=Integer.parseInt(year_int)-1900;
  Date date= new Date(year_sel,month_int,1);
  GregorianCalendar cal=new GregorianCalendar();
  cal.setTime(date);
  String[] week={"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
  int day=0;
  int day_week=0;
  
  for(int i=0;i<7;i++){
   labDay[i].setText(week[i]);
  }
  if(month_int==0||month_int==2||month_int==4||month_int==6||month_int==9||month_int==11){
   day=31;
  }else if(month_int==1 ||month_int==3||month_int==5||month_int==7||month_int==8||month_int==10){
   day=30;
  }else{
   if(cal.isLeapYear(year_sel)){
    day=29;
   }else{
    day=28;
   }
  }
  day_week=7+date.getDay();
  int count=1;
  for(int i=day_week;i<day_week+day;count++,i++){
   if(i %7==0||i==13||i==20||i==27||i==48||i==34||i==41){
    if(i==day_week+nowDate.getDate()-1){
     labDay[i].setForeground(Color.BLUE);
     labDay[i].setText(count+"'");
    }else{
     labDay[i].setForeground(Color.RED);
     labDay[i].setText(count+"");
    }
    
   }else{
    if(i==day_week+nowDate.getDate()-1){
     labDay[i].setForeground(Color.BLUE);
     labDay[i].setText(count+"'");
    }else{
     labDay[i].setForeground(Color.BLACK);
     labDay[i].setText(count+"");
    }
   }
   
  }
  if(day_week==0){
   for(int i=day;i<49;i++){
    labDay[i].setText(" ");
   }
  }else{
   for(int i=7;i<day_week;i++){
    labDay[i].setText(" ");
   }
   for(int i=day_week+day;i<49;i++){
    labDay[i].setText(" ");
   }
  }
 }
 @Override
 public void actionPerformed(ActionEvent e) {
  if(e.getSource()==yearCom||e.getSource()==monthCom){
   bool=false;
   this.setDay();
  }
 }
}

3、Clock时钟类：

package calender;

import java.awt.BorderLayout;
import java.awt.Color;

import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.border.TitledBorder;

public class Clock extends JPanel {
 private  UIManager.LookAndFeelInfo  looks[];
 private DrawClock clock;
 private JPanel paneClock;
 JPanel paneCal;
 public Clock(){
  super();
  looks=UIManager.getInstalledLookAndFeels();
  changeTheLookAndFeel(2);
  clock=new DrawClock();
  clock.start();
  this.setBackground(Color.GRAY);
  this.setLayout(new BorderLayout());
  this.setOpaque(false);
  this.add(clock);
  this.setBorder(new TitledBorder("时间日期 "));
  setSize(300,300);
  setVisible(true);
 }
 private void changeTheLookAndFeel(int i) {
  try{
   UIManager.setLookAndFeel(looks[i].getClassName());
   SwingUtilities.updateComponentTreeUI(this);
  }catch(Exception e){
   e.printStackTrace();
  }
 }
}

4、测试启动类：

package calender;

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Test extends JFrame {
 public Test(){
  Clock clock=new Clock();
  Calender cal=new Calender();
  JPanel jp2 = new JPanel();
  
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  this.setSize(600, 300);
  this.setVisible(true);
  this.setContentPane(clock);
  
  this.getContentPane().add(cal,BorderLayout.WEST);
  this.setResizable(false);
  
 }
 public static void main(String[] args){
  Test test =new Test();
  test.setTitle("万年历和时钟");
  
  
 }
}