package com.date;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class Test {
public static SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");
public static SimpleDateFormat format1 = new SimpleDateFormat(
"yyyyMMdd HH:mm:ss");
/**
* 得到指定日期的一天的的最后时刻23:59:59
*
* @param date
* @return
*/
public static Date getFinallyDate(Date date) {
String temp = format.format(date);
temp += " 23:59:59";
try {
return format1.parse(temp);
} catch (Exception e) {
return null;
}
}
/**
* 得到指定日期的一天的开始时刻00:00:00
*
* @param date
* @return
*/
public static Date getStartDate(Date date) {
String temp = format.format(date);
temp += " 00:00:00";
try {
return format1.parse(temp);
} catch (Exception e) {
return null;
}
}
/**
* 获取某年第一天日期开始时刻
* @param year 年份
* @return Date
*/
public static Date getYearFirstDay(int year){
Calendar cal = Calendar.getInstance();
cal.clear();
cal.set(Calendar.YEAR, year);
Date yearFirstDay = cal.getTime();
return getStartDate(yearFirstDay);
}
/**
* 获取某年最后一天日期最后时刻
* @param year 年份
* @return Date
*/
public static Date getYearLastDay(int year){
Calendar cal = Calendar.getInstance();
cal.clear();
cal.set(Calendar.YEAR, year);
cal.roll(Calendar.DAY_OF_YEAR, -1);
Date yearLastDay = cal.getTime();
return getFinallyDate(yearLastDay);
}
public static void main(String[] args) {
Calendar cal = Calendar.getInstance();
//获取当前年份
int year = cal.get(Calendar.YEAR);
System.out.println(year);
System.out.println(getYearFirstDay(year));
System.out.println(getYearLastDay(year));
}
}
-----------------------有任何问题可以在评论区评论,也可以私信我,我看到的话会进行回复,欢迎大家指教------------------------
(蓝奏云官网有些地址失效了,需要把请求地址lanzous改成lanzoux才可以)