博客

package test;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

/**

• @author cgao103@fiberhome.com

• @date 2021-12-30 15:57
  
  */
  
  public class Test5 {
  
  
  public static void main(String[] args) throws ParseException {
  
  
  SimpleDateFormat sdf1=new SimpleDateFormat(“yyyyMM”);
  
  SimpleDateFormat sdf2=new SimpleDateFormat(“yyyyMMdd”);
  
  Date nowDate=sdf1.parse(“202212”);
  
  Calendar calendar = Calendar.getInstance();
  
  calendar.setTime(nowDate);
  
  calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
  
  System.out.println(sdf2.format(calendar.getTime()));

   String year1 = "2020";
   String month2 = "12";
  
   int year = calendar.get(Calendar.YEAR); //2015，当前年份
   int month = calendar.get(Calendar.MONTH) + 1; //12，当前月，注意加 1
  

  }