1.输入年月，打印该月的日历，同Windows右下角日历

package com.homework;

import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Scanner;

public class Q1 {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub

System.out.println("请输入年月,格式如2009-09");
Scanner scanner = new Scanner(System.in);
String yearMonth = scanner.nextLine();
String[] str = yearMonth.split("-");
//1.得到该月第一天的日历
Calendar c = new GregorianCalendar(Integer.parseInt(str[0]), Integer.parseInt(str[1])-1, 1) ;
//2.得到该月第一天星期几
int week = c.get(Calendar.DAY_OF_WEEK);
//3.这个月有多少天
int days = c.getActualMaximum(Calendar.DAY_OF_MONTH);
System.out.println(week + " "+ days);
System.out.println("日\t一\t二\t三\t四\t五\t六");

int d = week-1;
for(int i = 0 ;i < d ;i ++){
System.out.print("\t");

}
System.out.print(1+"\t");
d++;
for(int i = 2; i <= days;i++){
if(d == 7 ){
d=0;
System.out.println();
}
System.out.print(i+"\t");
d++;
}
}

}