package com.moral.util;

import java.text.SimpleDateFormat;
import java.util.Date;

public class DateUtil {
    //获得过去i天的年月日
    public static String getOldTime(int i){
        Long time=System.currentTimeMillis();
        Long time1=time-(1000 * 60 * 60 * 24 * i);
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String sd = sdf.format(new Date(Long.parseLong(String.valueOf(time1))));
        String s=sd.substring(0,10);
        return s;
    }
}