java用日历类比较时间_Java 使用Calendar类输出指定年份和月份的日历

package com.cyl.test3;

import java.util.Calendar;

import java.util.Scanner;

public class RiLi {

public static void main(String[] args){

int year= 2020;

int month = 2;

Calendar calendar = Calendar.getInstance();

//由于Java中月份从0月开始计数,所以真实月份12月(month=12) 需要减1 才是Java中的12月

calendar.set(year,month-1,1);//每月首日星期几

int weekday = calendar.get(Calendar.DAY_OF_WEEK)-1;

System.out.println("当月首日星期" + weekday);

int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

System.out.println("当月最大天数" + maxDay);

System.out.println("\t\t"+year+"年"+month+"月");

System.out.println("一\t二\t三\t四\t五\t六\t日\t");

int temp = 0;

//补空格

for(int i = 0; i < weekday-1;i++)

{

System.out.print("\t");

temp++;

}

for(int i = 1; i <= maxDay;i++)

{

System.out.print(i+"\t");

if((temp+i)%7==0)

{

System.out.println();

}

}

}

}