中国小日历

package com.lian.swing;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.Calendar;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class CalebdarFrame  extends JFrame implements ActionListener{

	/**
	 * 日历
	 * Author： miluo
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new CalebdarFrame();
	}
	JTable table;
	JButton nextmonth,previousmonth;
	int year=2012, month=5;
	CalendarBean calenbean;
	Object[] name={"星期一","星期二","星期三","星期四","星期五","星期六","星期日"};
	String rili[][];
	JLabel showMessage=new JLabel("", JLabel.CENTER);
	JScrollPane scroll;
	public CalebdarFrame(){
		calenbean=new CalendarBean();
		calenbean.setYear(year);
		calenbean.setMonth(month);
		rili=calenbean.getCalendar();
//		for(int i=0;i<name.length;i++){
//			rili[0][i]=(String) name[i];
//		}
		DefaultTableModel model=new DefaultTableModel(rili,name);
		table=new JTable(model);
		table.setRowSelectionAllowed(false);
		nextmonth=new JButton("下个月");
		previousmonth=new JButton("上个月");
		nextmonth.addActionListener(this);
		previousmonth.addActionListener(this);
		JPanel pNorth=new JPanel(),
				pSouth=new JPanel();
		pNorth.add(previousmonth);
		pNorth.add(nextmonth);
		pSouth.add(showMessage);
		
		showMessage.setText("日历："+calenbean.getYear()+"年"+calenbean.getMonth()+"月");
		scroll=new JScrollPane(table);
		add(scroll,BorderLayout.CENTER);
		add(pNorth,BorderLayout.NORTH);
		add(pSouth,BorderLayout.SOUTH);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100,100,280,220);
		setVisible(true);
		validate();
		
	}
	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		if(e.getSource()==nextmonth){
			month=month+1;
			if(month>12){
				month=1;
				year+=1;
			}
			calenbean.setYear(year);
			calenbean.setMonth(month);
			
			int firstday=1;
			String pTime=year+"-"+month+"-"+firstday;
			try {
				int week=dayForWeek(pTime);
				rili=getCaldar(week);
			} catch (Exception e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
//			rili=calenbean.getCalendar();
			
			remove(scroll);
			DefaultTableModel model=new DefaultTableModel(rili,name);
			table=new JTable(model);
			table.setRowSelectionAllowed(false);
			scroll=new JScrollPane(table);
			add(scroll,BorderLayout.CENTER);
		}
		else{
			month=month-1;
			if(month<1){
				month=12;
				year-=1;
			}
			calenbean.setYear(year);
			calenbean.setMonth(month);
			
			int firstday=1;
			String pTime=year+"-"+month+"-"+firstday;
			try {
				int week=dayForWeek(pTime);
				rili=getCaldar(week);
			} catch (Exception e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
//			rili=calenbean.getCalendar();
			
			remove(scroll);
			DefaultTableModel model=new DefaultTableModel(rili,name);
			table=new JTable(model);
			table.setRowSelectionAllowed(false);
			scroll=new JScrollPane(table);
			add(scroll,BorderLayout.CENTER);
		}
		showMessage.setText("日历："+calenbean.getYear()+"年"+calenbean.getMonth()+"月");
	}
	public static int dayForWeek(String pTime) throws Exception {
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
		Calendar c = Calendar.getInstance();
		c.setTime(format.parse(pTime));
		int dayForWeek = 0;
		if (c.get(Calendar.DAY_OF_WEEK) == 1) {
			dayForWeek = 6;
		} else {
			dayForWeek = c.get(Calendar.DAY_OF_WEEK) - 2;
		}
		return dayForWeek;
	}
	public String[][] getCaldar(int weeks){
		String[][] a=new String[6][7];
		int day=0;
		int nextday=1;
		if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
			day=31;
		if(month==4||month==6||month==9||month==11)
			day=30;
		if(month==2){
			if((year%4==0)&&(year%400!=0)||(year%400==0))
				day=29;
			else
				day=28;
		}
		for(int k=0;k<6;k++){
			if(k==0){
				for(int j=weeks;j<7;j++){
					a[k][j]=""+nextday;
					nextday++;
				}
				}
			else{
				for(int j=0;j<7&&nextday<=day;j++){
					a[k][j]=""+nextday;
					nextday++;
				}
			}
		}
		return a;
	}
}