網(wǎng)頁累計(jì)時(shí)間代碼java格式，我們是今年3月5號(hào)10點(diǎn)在一起開始算到現(xiàn)在多少天多少小時(shí)多少分多少秒

public?static?void?main(String[]?args)?throws?ParseException?{

創(chuàng)新互聯(lián)是專業(yè)的衡山網(wǎng)站建設(shè)公司，衡山接單;提供網(wǎng)站建設(shè)、成都網(wǎng)站設(shè)計(jì),網(wǎng)頁設(shè)計(jì),網(wǎng)站設(shè)計(jì),建網(wǎng)站,PHP網(wǎng)站建設(shè)等專業(yè)做網(wǎng)站服務(wù);采用PHP框架,可快速的進(jìn)行衡山網(wǎng)站開發(fā)網(wǎng)頁制作和功能擴(kuò)展;專業(yè)做搜索引擎喜愛的網(wǎng)站,專業(yè)的做網(wǎng)站團(tuán)隊(duì),希望更多企業(yè)前來合作!

//當(dāng)前時(shí)間

Date?now=new?Date();

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

//今年3月5號(hào)10點(diǎn)15分20轉(zhuǎn)成Date類型

Date?old=sdf.parse("2016-03-05?10:15:20");

//計(jì)算時(shí)間差

long?diff=now.getTime()-old.getTime();

long?day=diff/(24*60*60*1000);

long?hour=(diff/(60*60*1000)-day*24);

long?min=((diff/(60*1000))-day*24*60-hour*60);

long?s=(diff/1000-day*24*60*60-hour*60*60-min*60);

System.out.println(""+day+"天"+hour+"小時(shí)"+min+"分"+s+"秒");

}

java整么計(jì)算時(shí)間

提供一個(gè)時(shí)間操作類給你，你可以調(diào)用里面的dateDiff方法，dateDiff（new Date(), getDateFromString("明天的字符串"）表示的就是現(xiàn)在到明天0點(diǎn)之前的差距天數(shù)。

你要分鐘數(shù)的話就自己改一下dateDiff，不要除以60和24就是分鐘了

以下是工具類代碼

import?org.apache.log4j.Logger;

import?java.text.ParseException;

import?java.text.SimpleDateFormat;

import?java.util.Calendar;

import?java.util.Date;

public?class?AdDateUtil?{

private?static?Logger?logger?=?Logger.getLogger(AdDateUtil.class);

static?public?String?getNowStr(String?format)?{

SimpleDateFormat?sdf?=?new?SimpleDateFormat(format);

String?now?=?sdf.format(new?Date());

return?now;

}

static?public?Date?getFormatDate(String?date,?String?format)?{

SimpleDateFormat?sdf?=?new?SimpleDateFormat(format);

Date?d?=?new?Date();

try?{

d?=?sdf.parse(date);

}?catch?(ParseException?e)?{

logger.error(e);

}

return?d;

}

static?public?String?getDateStr(Date?date,?String?format)?{

SimpleDateFormat?sdf?=?new?SimpleDateFormat(format);

String?d?=?sdf.format(date);

return?d;

}

static?public?String?getPadZeroString(String?s,?int?size)?{

StringBuffer?sb?=?new?StringBuffer();

for?(int?i?=?0;?i??(size?-?s.length());?i++)?{

sb.append("0");

}

sb.append(s);

return?sb.toString();

}

/**

*?得到某月的天數(shù)

*

*?@param?year

*?@param?month

*?@return

*/

static?public?int?getDayCountOfMonth(String?year,?String?month)?{

Calendar?cal?=?Calendar.getInstance();

//?年

cal.set(Calendar.YEAR,?Integer.parseInt(year));

//?月，因?yàn)镃alendar里的月是從0開始，所以要-1

cal.set(Calendar.MONTH,?Integer.parseInt(month)?-?1);

return?cal.getActualMaximum(Calendar.DAY_OF_MONTH);

}

static?public?String?getYesterday(String?format)?{

SimpleDateFormat?df?=?new?SimpleDateFormat(format);

Calendar?now?=?Calendar.getInstance();

now.roll(Calendar.DAY_OF_YEAR,?-1);?//昨天

return?df.format(now.getTime());

}

/**

*?獲取和今天附近的某天

*?@param?format

*?@param?diff

*?@return

*/

static?public?String?getADay(String?format,?int?diff)?{

SimpleDateFormat?df?=?new?SimpleDateFormat(format);

Calendar?now?=?Calendar.getInstance();

int?beforeM?=?now.get(Calendar.MONTH);

now.roll(Calendar.DAY_OF_YEAR,?diff);?//

int?nowM?=?now.get(Calendar.MONTH);

//必須進(jìn)行日期處理，否則2009-01-04日前七天是2009-12-28

if?(nowM??beforeM)?{

now.roll(Calendar.YEAR,?-1);

}

return?df.format(now.getTime());

}

static?public?String?getTomorrow(String?format)?{

SimpleDateFormat?df?=?new?SimpleDateFormat(format);

Calendar?now?=?Calendar.getInstance();

now.roll(Calendar.DAY_OF_YEAR,?1);?//明天

return?df.format(now.getTime());

}

/**

*?得到最近num天的全部日期

*?說明:

*?1.日期是從昨天開始算的.

*?2.如果num=2?,?日期是2008-03-14?,則返回的結(jié)果為?2008-03-12、2008-03-13

*?@param?num

*?@return

*/

public?static?String[]?getDaysByNum(int?num,?String?date)?{

SimpleDateFormat?sdf?=?new?SimpleDateFormat("yyyy-MM-dd");

String[]?result?=?{??};

Calendar?cal?=?Calendar.getInstance();

cal.setTime(getDateFromString(date,?"yyyy-MM-dd"));

//最近一周

result?=?new?String[num];

for?(int?i?=?num;?i??0;?i--)?{

cal.add(Calendar.DAY_OF_YEAR,?-1);

result[i?-?1]?=?sdf.format(new?Date(cal.getTimeInMillis()));

}

return?result;

}

public?static?Date?getDateFromString(String?dateStr,?String?format)?{

if?((dateStr?==?null)?||?(format?==?null))?{

try?{

throw?new?Exception("數(shù)據(jù)類型異常"?+?dateStr?+?"|"?+?format);

}?catch?(Exception?e)?{

logger.error("數(shù)據(jù)類型異常:"?+?e);

}

}

SimpleDateFormat?df?=?new?SimpleDateFormat(format);

Date?date;

try?{

date?=?df.parse(dateStr);

return?date;

}?catch?(Exception?ex)?{

logger.error(ex);

return?new?Date();

}

}

static?public?int?getNowYear()?{

Calendar?cal?=?Calendar.getInstance();

return?cal.get(Calendar.YEAR);

}

static?public?int?getNowMonth()?{

Calendar?cal?=?Calendar.getInstance();

return?cal.get(Calendar.MONTH)?+?1;

}

public?static?String[]?getMonthRang(String?year,?String?month)?{

String?beginDate?=?year?+?"-"?+?month?+?"-01";

String?endDate?=?year?+?"-"?+?month?+?"-"?+

getDayCountOfMonth(year,?month);

return?getDaysByRang(beginDate,?endDate);

}

public?static?String[]?getDaysByRang(String?beginDate,?String?endDate)?{

SimpleDateFormat?sdf?=?new?SimpleDateFormat("yyyy-MM-dd");

//得到兩個(gè)日期間相差多少天

int?num?=?dateDiff(beginDate,?endDate);

if?(num??0)?{

//顛倒一下日期

String?tmp?=?beginDate;

beginDate?=?endDate;

endDate?=?tmp;

num?=?0?-?num;

}

String[]?result?=?{??};

Calendar?cal?=?Calendar.getInstance();

try?{

cal.setTime(sdf.parse(beginDate));

}?catch?(ParseException?e)?{

e.printStackTrace();

}

num?=?num?+?1;?//把開始和結(jié)束日期都包含進(jìn)去

result?=?new?String[num];

for?(int?i?=?0;?i??num;?i++)?{

if?(i??0)?{

cal.add(Calendar.DAY_OF_YEAR,?1);

}

result[i]?=?sdf.format(new?Date(cal.getTimeInMillis()));

}

return?result;

}

public?static?int?dateDiff(String?beginDate,?String?endDate)?{

SimpleDateFormat?sdf?=?new?SimpleDateFormat("yyyy-MM-dd");

Date?date?=?null;

try?{

date?=?sdf.parse(endDate);

}?catch?(ParseException?e)?{

date?=?new?Date();

e.printStackTrace();

}

long?end?=?date.getTime();

try?{

date?=?sdf.parse(beginDate);

}?catch?(ParseException?e)?{

date?=?new?Date();

e.printStackTrace();

}

long?begin?=?date.getTime();

long?day?=?(end?-?begin)?/?(1000?*?3600?*?24);?//除1000是把毫秒變成秒

return?Integer.parseInt(Long.toString(day));

}

public?static?void?main(String[]?args)?{

System.out.println(AdDateUtil.getADay("yyyy-MM-dd",?-7));

}

}

java如何計(jì)算程序運(yùn)行時(shí)間

第一種是以毫秒為單位計(jì)算的。

[java]?view plain?copy

//偽代碼

long?startTime=System.currentTimeMillis();???//獲取開始時(shí)間

doSomeThing();??//測(cè)試的代碼段

long?endTime=System.currentTimeMillis();?//獲取結(jié)束時(shí)間

System.out.println("程序運(yùn)行時(shí)間：?"+(end-start)+"ms");

第二種是以納秒為單位計(jì)算的。?

[java]?view plain?copy

//偽代碼

long?startTime=System.nanoTime();???//獲取開始時(shí)間

doSomeThing();??//測(cè)試的代碼段

long?endTime=System.nanoTime();?//獲取結(jié)束時(shí)間

System.out.println("程序運(yùn)行時(shí)間：?"+(end-start)+"ns");

包含所需的包： ?import java.lang.System;

java中如何實(shí)現(xiàn) 統(tǒng)計(jì)時(shí)間

long t1=System.currentTimeMillis();

.......... //中間放你要測(cè)的代碼

System.out.println("這段代碼運(yùn)行了:"+ (System.currentTimeMillis()-t1)/1000 + "秒！”);

網(wǎng)站標(biāo)題：java統(tǒng)計(jì)時(shí)間的代碼的簡(jiǎn)單介紹
文章分享：http://chinadenli.net/article4/ddgcsie.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供虛擬主機(jī)、網(wǎng)站設(shè)計(jì)公司、App開發(fā)、網(wǎng)站設(shè)計(jì)、自適應(yīng)網(wǎng)站、用戶體驗(yàn)

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來源： 創(chuàng)新互聯(lián)