Calendar获取指定日期一个月后的时间

package com.Beichen.XHealthView.XRecommendation;

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

public class Test {
    public static void main(String[] args) {

        Calendar ca = Calendar.getInstance();
        ca.setTime(new Date());
        ca.add(Calendar.MONTH, +1);//设置1个月后

        // ca.add(Calendar.YEAR, +1); // 年份加1

        // ca.add(Calendar.DATE, +1);// 日期加1
        Date afterDate = ca.getTime();

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        System.out.println(sdf.format(afterDate));

    }
}