[工具类] 时间

package com.claw.util.date;

import java.text.SimpleDateFormat;
import java.util.Calendar;

public class DateUtil {
    
    public static void main(String[] args) {
        System.out.println(getYesterday());
    }
    
    public static String getYesterday(){
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.DATE, -1);
        String yesterday = new SimpleDateFormat("yyyyMMdd").format(calendar.getTime());
        return yesterday;
    }

}