java语言编写的万年历

import java.awt.*; import java.awt.Font; import java.awt.Color; import java.awt.GridLayout; import java.awt.event.*; import java.text.SimpleDateFormat; import java.util.*; import javax.swing.JButton; public class Wan extends Frame implements ActionListener, ItemListener, Runnable { Thread time; int Y=2008,M=10; Font font=new Font("楷体-GB2312",Font.BOLD,12); Color color=new Color(231,232,255); Choice year,month; Panel p1,p2,p3; GridLayout layout=new GridLayout(7,7,10,10); Button today,exit; String 月[]={"01","02","03","04","05","06","07","08","09","10","11","12"}; Label la1,la2,la3,la4; Label []label=new Label[49]; String weekDay[]= {" 日", " 一"," 二"," 三"," 四"," 五"," 六"}; Wan() { super("万年历"); this.setBackground(color); this.setResizable(false); p1=new Panel(); la1=new Label("在此处查询"); la1.setForeground(Color.blue); la1.setFont(font); p1.add(la1); year=new Choice(); p1.add(year); for(int i=1800;i<=3000;i++) year.add(""+i); year.select("2008"); year.setFont(font); year.setForeground(Color.blue); year.addItemListener(this); la2=new Label("年"); la2.setFont(font); la2.setForeground(Color.blue); p1.add(la2); month=new Choice(); for(int i=0;i<12;i++) month.add(月[i]); month.select("10"); month.setFont(font); month.setForeground(Color.blue); month.addItemListener(this); p1.add(month); la3=new Label("月"); la3.setFont(font); la3.setForeground(Color.blue); p1.add(la3); today=new Button("今日"); today.addActionListener(this); p1.add(today); this.add(p1, "North"); p2=new Panel(); p2.setLayout(layout); for(int i=0;i<7;i++) { label[i]=new Label(weekDay[i]); label[i].setFont(font); label[i].setForeground(Color.blue); p2.add(label[i]); } for(int i=7;i<49;i++) { label[i]=new Label(); label[i].setFont(font); label[i].setForeground(Color.blue); p2.add(label[i]); } this.add(p2, "Center"); update(2008,10); p3=new Panel(); la4=new Label(); la4.setFont(font); la4.setForeground(Color.blue); p3.add(la4); exit=new Button("退出"); exit.addActionListener(this); p3.add(exit); time=new Thread(this); time.setDaemon(true); time.start(); this.add(p3,"South"); layout=new GridLayout(7,7,10,10); this.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { dispose(); } }); this.setVisible(true); this.setBounds(60, 60, 450, 400); this.validate(); } public void update(int y,int m) { int n=0,s,i,j,k,r; Calendar calendar=Calendar.getInstance(); calendar.setTime(new Date()); j=calendar.get(Calendar.YEAR); k=calendar.get(Calendar.MONTH)+1; r=calendar.get(Calendar.DAY_OF_MONTH); calendar.set(y, m-1, 1); s=calendar.get(Calendar.DAY_OF_WEEK); switch(m) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: n=31; break; case 4: case 6: case 9: case 11: n=30; break; case 2: { if((y%100!=0&&y%4==0)||y%400==0) n=29; else n=28; break; } default: n=0;break; } for(i=7;i<s+6;i++) label[i].setText(null); for(int t=1;t<=n;i++,t++) { label[i].setText(" "+t); if(i%7==0||i%7==6) { label[i].setForeground(Color.red); label[i].setBackground(color); } if(Y==j&&M==k) label[r+s+5].setBackground(Color.green); } for(;i<49;i++) { label[i].setText(null); label[i].setBackground(color); } } public void actionPerformed(ActionEvent e) { if(e.getSource()==exit) this.dispose(); else if(e.getSource()==today) { Y=2008; M=10; update(Y,M); } } public void itemStateChanged(ItemEvent e) { if(e.getSource()==year) { Y=Integer.parseInt(year.getSelectedItem()); update(Y,M); } else if(e.getSource()==month) { M=Integer.parseInt(month.getSelectedItem()); update(Y,M); } } public void run() { // TODO Auto-generated method stub Date date; String str; SimpleDateFormat format=new SimpleDateFormat("北京时间：yyyy年MM月dd日HH时mm分ss秒"); while(true) { try { date=new Date(); str=format.format(date); la4.setText(str); Thread.sleep(1000); } catch(InterruptedException ee){} } } }