如何制作万年历桌面？

package Clock; import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.text.*; import java.util.*; class MainFrame extends JFrame{ JPanel panel=new JPanel(new BorderLayout()); JPanel panel1=new JPanel(); JPanel panel2=new JPanel(new GridLayout(7,7)); JPanel panel3=new JPanel(); JLabel []label=new JLabel[49]; JLabel y_label=new JLabel("年份"); JLabel m_label=new JLabel("月份"); JComboBox com1=new JComboBox(); JComboBox com2=new JComboBox(); JButton button=new JButton("查看"); int re_year,re_month; int x_size,y_size; String year_num; Calendar now=Calendar.getInstance(); //实例化Calendar MainFrame(){ super("万年历"); setSize(300,350); x_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getWidth()); y_size=(int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight()); setLocation((x_size-300)/2,(y_size-350)/2); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); panel1.add(y_label); panel1.add(com1); panel1.add(m_label); panel1.add(com2); panel1.add(button); for(int i=0;i<49;i++){ label[i]=new JLabel("",JLabel.CENTER);//将显示的字符设置为居中 panel2.add(label[i]); } panel3.add(new Clock(this)); panel.add(panel1,BorderLayout.NORTH); panel.add(panel2,BorderLayout.CENTER); panel.add(panel3,BorderLayout.SOUTH); panel.setBackground(Color.white); panel1.setBackground(Color.white); panel2.setBackground(Color.white); panel3.setBackground(Color.white); Init(); button.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ int c_year,c_month,c_week; c_year=Integer.parseInt(com1.getSelectedItem().toString()); //得到当前所选年份 c_month=Integer.parseInt(com2.getSelectedItem().toString())-1; //得到当前月份，并减1,计算机中的月为0－11 c_week=use(c_year,c_month); //调用函数use，得到星期几 Resetday(c_week,c_year,c_month); //调用函数Resetday }}); setContentPane(panel); setVisible(true); setResizable(false); } public void Init(){ int year,month_num,first_day_num; String log[]={"日","一","二","三","四","五","六"}; for(int i=0;i<7;i++){ label[i].setText(log[i]); } for(int i=0;i<49;i=i+7){ label[i].setForeground(Color.red); //将星期日的日期设置为红色 } for(int i=6;i<49;i=i+7){ label[i].setForeground(Color.green);//将星期六的日期设置为绿色 } for(int i=1;i<10000;i++){ com1.addItem(""+i); } for(int i=1;i<13;i++){ com2.addItem(""+i); } month_num=(int)(now.get(Calendar.MONTH)); //得到当前时间的月份 year=(int)(now.get(Calendar.YEAR)); //得到当前时间的年份 com1.setSelectedIndex(year-1); //设置下拉列表显示为当前年 com2.setSelectedIndex(month_num); //设置下拉列表显示为当前月 first_day_num=use(year,month_num); Resetday(first_day_num,year,month_num); } public int use(int reyear,int remonth){ int week_num; now.set(reyear,remonth,1); //设置时间为所要查询的年月的第一天 week_num= (int)(now.get(Calendar.DAY_OF_WEEK));//得到第一天的星期 return week_num; } public void Resetday(int week_log,int year_log,int month_log){ int month_score_log; //判断是否是闰年的标记 int month_day_score; //存储月份的天数 int count; month_score_log=0; month_day_score=0; count=1; if(year_log%4==0&&year_log%100!=0||year_log%400==0){//判断是否为闰年 month_score_log=1; } month_log=month_log+1; //将传来的月份数加1 switch(month_log){ case 1: case 3: case 5: case 7: case 8: case 10: case 12: month_day_score=31; break; case 4: case 6: case 9: case 11: month_day_score=30; break; case 2: if(month_score_log==1){ month_day_score=29; } else{ month_day_score=28; } break; } for(int i=7;i<49;i++){ //初始化标签 label[i].setText(""); } week_log=week_log+6; //将星期数加6，使显示正确 month_day_score=month_day_score+week_log; for(int i=week_log;i<month_day_score;i++,count++){ label[i].setText(count+""); } } public static void main(String [] args){ JFrame.setDefaultLookAndFeelDecorated(true); MainFrame start=new MainFrame(); } }

package Clock; import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.text.*; import java.util.*; class Clock extends Canvas implements Runnable{ MainFrame mf; Thread t; String time; Clock(MainFrame mf){ this.mf=mf; setSize(400,40); setBackground(Color.white); t=new Thread(this); //实例化线程 t.start(); //调用线程 } public void run(){ while(true){ try{ t.sleep(1000); //休眠1秒钟 }catch(InterruptedException e){ System.out.println("异常"); } this.repaint(100); } } public void paint(Graphics g){ Font f=new Font("宋体",Font.BOLD,16); SimpleDateFormat SDF=new SimpleDateFormat("yyyy'年'MM'月'dd'日'HH:mm:ss");//格式化时间显示类型 Calendar now=Calendar.getInstance(); time=SDF.format(now.getTime()); //得到当前日期和时间 g.setFont(f); g.setColor(Color.orange); g.drawString(time,100,25); } }

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推荐一个万年历桌面壁纸.O(∩_∩)O~