package com.utcsoft.pcapps.selfservice.controller;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class Test {
/**
* @param args
*/
/**
* 此函数实现：给定日期和经过天数，算出结果日期
*@author 刘鹏
其中sDate为指定日期，iDate为多少时间段(可以是 年、月、日... 具体根据iCal来确定)
iCal为某种时间段例如 月：Calendar.MONTH(具体可查询api中Calendar类)
sStr为日期格式 例如："yyyyMMdd"(具体可查询api中Calendar类)
* @param sDate
* @param iDate
* @param iCal
* @param sStr
* @return
*/
public String getNextDate(String sDate, int iDate,int iCal, String sStr){
String sNextDate = "";
Calendar calendar = Calendar.getInstance();
SimpleDateFormat formatter = new SimpleDateFormat(sStr);
Date date = null;
try {
date = formatter.parse(sDate);
} catch (ParseException e) {
e.printStackTrace();
}
calendar.setTime(date);
calendar.add(iCal, iDate);
sNextDate = formatter.format(calendar.getTime());
return sNextDate ;
}
/**
* 返回两个日期之间相差几天
* @author 刘鹏
* @param fDate
* @param oDate
* @return
*/
public static int daysOfTwo(Date fDate, Date oDate) {
Calendar aCalendar = Calendar.getInstance();
aCalendar.setTime(fDate);
int day1 = aCalendar.get(Calendar.DAY_OF_YEAR);
aCalendar.setTime(oDate);
int day2 = aCalendar.get(Calendar.DAY_OF_YEAR);
return day2 - day1;
}
public static void main(String[] args) throws ParseException {
Test test = new Test();
String a = test.getNextDate("-12-31", 1, Calendar.DATE, "yyyy-MM-dd");
System.out.println(a);
String str1 = "-08-11";
String str2 = "-08-15";
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
Date d1 = simpleDateFormat.parse(str1);
Date d2 = simpleDateFormat.parse(str2);
int day = daysOfTwo(d1, d2);
System.out.println(day);
}
}
