java时间推算

package com.gxzhuangxing.base.modules.coupon.service;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;public class Test {public static void main(String[]arg){<pre name="code" class="java">    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

Date date = new Date();

    System.out.println(sdf.format(date));<pre name="code" class="java">    Calendar calendar = new GregorianCalendar();    calendar.setTime(date);     calendar.add(calendar.DATE,19);//把日期往后增加19天.整数往后推,负数往前移动     date=calendar.getTime();   //这个时间就是日期往后推19天的结果     System.out.println(sdf.format(date));}}