Java Calendar Java基于Calendar类输出指定年份和月份的日历代码实例

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();
      }
    }
 
  }
}