日期常用类总结
来源:互联网 发布:vb循环语句 for next 编辑:程序博客网 时间:2024/06/10 10:34
/**
* <p>Title: 日期常用工具方法类</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) </p>
* <p>Company: </p>
* @author ustczyy 2013 8 28
* @version 1.0
*/
package com.util;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
/**
* 日期常用工具方法类
*/
public final class DateTools {
public static String getCurDateTimeStr()
{
Date newdate = new Date() ;
long datetime = newdate.getTime() ;
Timestamp timestamp = new Timestamp(datetime) ;
String str = timestamp.toString();
return new StringBuffer()
.append(datetime)
.toString();
}
public static String getCurDateTime()
{
Date newdate = new Date() ;
long datetime = newdate.getTime() ;
Timestamp timestamp = new Timestamp(datetime) ;
return (timestamp.toString()).substring(0,19);
}
public static String getCurrentDate()
{
Date newdate = new Date() ;
long datetime = newdate.getTime() ;
Timestamp timestamp = new Timestamp(datetime) ;
String currentdate = (timestamp.toString()).substring(0,4) + "-" + (timestamp.toString()).substring(5,7) + "-" +(timestamp.toString()).substring(8,10);
return currentdate;
}
//返回"yyyyMMdd"格式日期
public static String getDateYYYYMMDD()
{
Date newdate = new Date() ;
long datetime = newdate.getTime() ;
Timestamp timestamp = new Timestamp(datetime) ;
String currentdate = (timestamp.toString()).substring(0,4) + (timestamp.toString()).substring(5,7) +(timestamp.toString()).substring(8,10);
return currentdate;
}
//返回"yyMMdd"格式日期
public static String getDateYYMMDD()
{
Date newdate = new Date() ;
long datetime = newdate.getTime() ;
Timestamp timestamp = new Timestamp(datetime) ;
String currentdate = (timestamp.toString()).substring(2,4) + (timestamp.toString()).substring(5,7) +(timestamp.toString()).substring(8,10);
return currentdate;
}
//返回"yyyy-MM-dd"格式日期
public static String getDate(Date newdate){
long datetime = newdate.getTime() ;
Timestamp timestamp = new Timestamp(datetime) ;
String currentdate = (timestamp.toString()).substring(0,4) + "-" + (timestamp.toString()).substring(5,7) + "-" +(timestamp.toString()).substring(8,10);
return currentdate;
}
//获取开始时间和结束时间之间的天数
public static long getDisDays (String datebegin, String dateend) {
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Date dateBegin=sdf.parse(datebegin);
Date dateEnd=sdf.parse(dateend);
return (dateEnd.getTime()-dateBegin.getTime())/(3600*24*1000) + 1;
} catch (Exception e) {
return 0;
}
}
public static String getCurrentTime()
{
Date newdate = new Date() ;
long datetime = newdate.getTime() ;
Timestamp timestamp = new Timestamp(datetime) ;
String currenttime = (timestamp.toString()).substring(11,13) + ":" + (timestamp.toString()).substring(14,16) + ":" +(timestamp.toString()).substring(17,19);
return currenttime;
}
/**
* 计算2个日期之间间隔天数方法
*
* @param d1 The first Calendar.
* @param d2 The second Calendar.
*
* @return 天数
*/
public static long getDaysBetween (java.util.Calendar d1, java.util.Calendar d2) {
return (d1.getTime().getTime()-d2.getTime().getTime())/(3600*24*1000);
}
/**
* 计算2个日期之间间隔天数方法
*
* @param d1 The first Calendar.
* 格式yyyy-MM-dd
* @param d2 The second Calendar.
*
* @return 天数
*/
public static long getDaysBetween (String d1, String d2) {
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Date dt1=sdf.parse(d1);
Date dt2=sdf.parse(d2);
return (dt1.getTime()-dt2.getTime())/(3600*24*1000);
} catch (Exception e) {
return 0;
}
}
/**
* @param d1
* @param d2
* @param onlyWorkDay 是否只计算工作日
* @return 计算两个日期之间的时间间隔(d1-d2),可选择是否计算工作日
*/
public static long getDaysBetween (String d1,String d2,boolean onlyWorkDay) {
if(!onlyWorkDay){
return getDaysBetween(d1,d2);
}else{
long days=0;
Calendar calendar=Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Date dt1=sdf.parse(d1);
Date dt2=sdf.parse(d2);
days= (dt1.getTime()-dt2.getTime())/(3600*24*1000);
for(calendar.setTime(dt1);!calendar.getTime().before(dt2);calendar.add(Calendar.DAY_OF_YEAR,-1)){
int week=calendar.get(Calendar.DAY_OF_WEEK);
if(week == Calendar.SUNDAY || week == Calendar.SATURDAY){
days--;
}
}
if(days<0){
days=0;
}
} catch (Exception e) {}
return days;
}
}
/**
* @param date
* @return 判断日期是否为工作日(周六和周日为非工作日)
*/
public static boolean isWorkDay(Date date){
Calendar calendar=Calendar.getInstance();
calendar.setTime(date);
int week=calendar.get(Calendar.DAY_OF_WEEK);
if(week == Calendar.SUNDAY || week == Calendar.SATURDAY){
return false;
}else{
return true;
}
}
/**
* 计算两个时间之间的间隔 单位:分钟(minutes)
* 格式 yyyy-MM-dd/HH:mm:ss
* */
public static long getMinutesBetween(String s1, String s2) {
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd/HH:mm:ss");
try {
Date dt1=sdf.parse(s1);
Date dt2=sdf.parse(s2);
return (dt1.getTime()-dt2.getTime())/(60*1000);
} catch (Exception e) {
return 0;
}
}
/*
* @param d1 开始日期
* 格式yyyy-MM-dd
* @param d2 结束日期.
*
* @return 按月分隔的list,list里面每个月一个map,第一天begindate,最后一天enddate
*/
public static List<HashMap> getDateBetween (String d1, String d2) {
ArrayList<HashMap> list = new ArrayList<HashMap>();
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(sdf.parse(d1));
cal2.setTime(sdf.parse(d2));
int monthnum =(cal2.get(Calendar.YEAR)- cal1.get(Calendar.YEAR))*12 + cal2.get(Calendar.MONTH)- cal1.get(Calendar.MONTH);
for(int i=0;i<monthnum;i++){
HashMap<String,Object> map = new HashMap<String,Object>();
map.put("begindate",sdf.format(cal1.getTime()));
cal1.add(Calendar.DATE,cal1.getActualMaximum(Calendar.DATE)-cal1.get(Calendar.DATE));
map.put("enddate",sdf.format(cal1.getTime()));
list.add(map);
cal1.add(Calendar.MONTH,1);
cal1.add(Calendar.DATE,1-cal1.get(Calendar.DATE));
}
HashMap<String,Object> map = new HashMap<String,Object>();
map.put("begindate",sdf.format(cal1.getTime()));
map.put("enddate",d2);
list.add(map);
} catch (Exception e) {
return list;
}
return list;
}
/*
* 两个时间段得相交的天数
* 格式yyyy-MM-dd
*
*
* @return 天数
*/
public static long getDays(String b1,String e1,String b2,String e2){
long ret = 0;
String begindate = "";
String enddate = "";
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Calendar begin1 = Calendar.getInstance();
Calendar end1 = Calendar.getInstance();
Calendar begin2 = Calendar.getInstance();
Calendar end2 = Calendar.getInstance();
begin1.setTime(sdf.parse(b1));
end1.setTime(sdf.parse(e1));
begin2.setTime(sdf.parse(b2));
end2.setTime(sdf.parse(e2));
//时间段不相交
if ((begin2.getTime().getTime()>end1.getTime().getTime() && end2.getTime().getTime()>end1.getTime().getTime()) ||
(begin2.getTime().getTime()<begin1.getTime().getTime() && end2.getTime().getTime()<begin1.getTime().getTime())) {
//System.out.println("b"+ret);
return ret;
}
if (begin2.getTime().getTime() >= begin1.getTime().getTime()){
begindate = sdf.format(begin2.getTime());
}else{
begindate = sdf.format(begin1.getTime());
}
if (end2.getTime().getTime()>= end1.getTime().getTime()){
enddate = sdf.format(end1.getTime());
}else{
enddate = sdf.format(end2.getTime());
}
if (!begindate.equals("") && !enddate.equals("")){
ret = getDisDays(begindate,enddate);
}
} catch (Exception e) {
}
//System.out.println("e"+ret);
return ret;
}
/**
* 比较2个格式为yyyy-MM-dd的日期<br>
* 若d1小于d2返回true<br>
* d1=2007-10-01,d2=2007-10-15,则返回true
* @return
*/
public static boolean after(String d1,String d2){
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Date dt1=sdf.parse(d1);
Date dt2=sdf.parse(d2);
return dt1.getTime() < dt2.getTime();
} catch (Exception e) {
return false;
}
}
/**
* 比较2个日期
*
* @return
*/
public static boolean afterAndEqual(String d1,String d2){
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Date dt1=sdf.parse(d1);
Date dt2=sdf.parse(d2);
return dt1.getTime() <= dt2.getTime();
} catch (Exception e) {
return false;
}
}
/*
* 移动日期
* @param date 原日期
* @param len 移动量
* @return 移动后日期
*/
public static String dayMove(String date,int len){
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Calendar cal = Calendar.getInstance();
cal.setTime(sdf.parse(date));
cal.add(Calendar.DATE, len);
return sdf.format(cal.getTime());
} catch (Exception e) {
return date;
}
}
public static String getCurrentMonth(){
Calendar today=Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
String curmonth=sdf.format(today.getTime());
return curmonth;
}
/*
* 移动月份
* @param date 原日期
* @param len 移动量
* @return 移动后日期
*/
public static String monthMove(String date,int len){
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM");
try {
Calendar cal = Calendar.getInstance();
cal.setTime(sdf.parse(date));
cal.add(Calendar.MONTH, len);
return sdf.format(cal.getTime());
} catch (Exception e) {
return date;
}
}
/*
* 截取2个时间段相交的时间段
*
* @return String[] = {array[0]=begindate ,array[1]=enddate}
* 不相交 array[0]=""
*
*/
public static String[] getBetweenDate(String b1,String e1,String b2,String e2){
String[] date = new String[2];
String begindate = "";
String enddate = "";
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
try {
Calendar begin1 = Calendar.getInstance();
Calendar end1 = Calendar.getInstance();
Calendar begin2 = Calendar.getInstance();
Calendar end2 = Calendar.getInstance();
begin1.setTime(sdf.parse(b1));
end1.setTime(sdf.parse(e1));
begin2.setTime(sdf.parse(b2));
end2.setTime(sdf.parse(e2));
if ((begin2.getTime().getTime()>=end1.getTime().getTime() && end2.getTime().getTime()>=end1.getTime().getTime()) ||
(begin2.getTime().getTime()<=begin1.getTime().getTime() && end2.getTime().getTime()<=begin1.getTime().getTime())) {
date[0] = "";
return date;
}
if (begin2.getTime().getTime() >= begin1.getTime().getTime()){
begindate = sdf.format(begin2.getTime());
}else{
begindate = sdf.format(begin1.getTime());
}
if (end2.getTime().getTime()>= end1.getTime().getTime()){
enddate = sdf.format(end1.getTime());
}else{
enddate = sdf.format(end2.getTime());
}
if (!begindate.equals("") && !enddate.equals("")){
date[0] = begindate;
date[1] = enddate;
}
} catch (Exception e) {
}
return date;
}
}
- 日期常用类总结
- 日期处理常用总结
- 日期处理常用总结
- php常用函数总结-----日期
- 常用的日期方法总结
- Java 常用日期类
- 常用日期工具类
- 常用日期工具类
- 八、java 常用日期函数总结
- iOS 日期(NSDate)的常用操作总结
- MySql 常用日期时间函数总结
- 日期容器中常用函数(总结)
- 日期类总结
- Java 日期类总结
- java日期类总结
- java 日期类总结
- 一些常用类的总结(日期方面的,math方面的,比较器)
- PublicConst常用日期类(C#)
- 窗口子类化和超类化
- 作业
- Windows 窗口子类化和超类化
- 调用控制台程序,并实施获取控制台输出文字
- Parsing web.config with XmlDocument.SelectSingleNode
- 日期常用类总结
- git windows下搭建全过程
- 贝叶斯网络中的推理引擎及其改进参考文献
- Apple iOS MDM开发流程
- poj 2096 Collecting Bugs(概率DP)
- ListCtrl如何响应滚动条事件
- E7
- 2.2,E2(b)
- HDU 1021 Fibonacci Again