时间转字符串，时间比较

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package com.example.maptest.mycartest.Utils;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;/** * Created by ${Author} on 2017/3/24. * Use to */public class DateChangeUtil {    /*字符串转时间*/    public static Date StrToDate(String str) {        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        Date date = null;        try {            date = format.parse(str);        } catch (ParseException e) {            e.printStackTrace();        }        return date;    }    public static String getdata(long date) {        String dates = null;        long nd = 1000 * 24 * 60 * 60;        long nh = 1000 * 60 * 60;        long nm = 1000 * 60;        long day = date / nd;        // 计算差多少小时        long hour = date % nd / nh;        // 计算差多少分钟        long min = date % nd % nh / nm;        // 计算差多少秒//输出结果        // long sec = diff % nd % nh % nm / ns;//        return day + "天" + hour + "小时" + min + "分钟";        dates = day + "天" + hour + "小时" + min + "分钟";        return dates;    }}

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