时间的写法汇总

import java.util.Date;

import java.text.SimpleDateFormat;

public class Test {

public static void main(String[] args) {

Date date = new Date();

String strDate = "";

SimpleDateFormat format = new SimpleDateFormat();

format.applyPattern("yyyy-MM-dd HH:mm:ss");

strDate = format.format(date);

System.out.println(strDate);

format.applyPattern("yyyy-MM-dd");

strDate = format.format(date);

System.out.println(strDate);

format.applyPattern("yyyyMMddHHmmss");

strDate = format.format(date);

System.out.println(strDate);

format.applyPattern("yyyy'年'MM'月'dd'日'");

strDate = format.format(date);

System.out.println(strDate);

}

}

public class bb {

public static void main(String[] args) {

// TODO Auto-generated method stub

SimpleDateFormat df = new SimpleDateFormat("yyyyMMddhhmmss");

String dateString = "20071128175545";

try {

Date date = df.parse(dateString);

System.out.println(date.toLocaleString());

}

catch (Exception ex)

{ System.out.println(ex.getMessage());}

}

}

/**

日期类

* @date 2003-12-04

* @version 1.0

*/

import java.util.*;

import java.text.*;

import java.util.Calendar;

public class VeDate {

/**

* 获取现在时间

*

* @return 返回时间类型 yyyy-MM-dd HH:mm:ss

*/

public static Date getNowDate() {

Date currentTime = new Date();

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

String dateString = formatter.format(currentTime);

ParsePosition pos = new ParsePosition(8);

Date currentTime_2 = formatter.parse(dateString, pos);

return currentTime_2;

}

/**

* 获取现在时间

*

* @return返回短时间格式 yyyy-MM-dd

*/

public static Date getNowDateShort() {

Date currentTime = new Date();

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

String dateString = formatter.format(currentTime);

ParsePosition pos = new ParsePosition(8);

Date currentTime_2 = formatter.parse(dateString, pos);

return currentTime_2;

}

/**

* 获取现在时间

*

* @return返回字符串格式 yyyy-MM-dd HH:mm:ss

*/

public static String getStringDate() {

Date currentTime = new Date();

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

String dateString = formatter.format(currentTime);

return dateString;

}

/**

* 获取现在时间

*

* @return 返回短时间字符串格式yyyy-MM-dd

*/

public static String getStringDateShort() {

Date currentTime = new Date();

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

String dateString = formatter.format(currentTime);

return dateString;

}

/**

* 获取时间 小时:分;秒 HH:mm:ss

*

* @return

*/

public static String getTimeShort() {

SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");

Date currentTime = new Date();

String dateString = formatter.format(currentTime);

return dateString;

}

/**

* 将长时间格式字符串转换为时间 yyyy-MM-dd HH:mm:ss

*

* @param strDate

* @return

*/

public static Date strToDateLong(String strDate) {

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

ParsePosition pos = new ParsePosition(0);

Date strtodate = formatter.parse(strDate, pos);

return strtodate;

}

/**

* 将长时间格式时间转换为字符串 yyyy-MM-dd HH:mm:ss

*

* @param dateDate

* @return

*/

public static String dateToStrLong(java.util.Date dateDate) {

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

String dateString = formatter.format(dateDate);

return dateString;

}

/**

* 将短时间格式时间转换为字符串 yyyy-MM-dd

*

* @param dateDate

* @param k

* @return

*/

public static String dateToStr(java.util.Date dateDate) {

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

String dateString = formatter.format(dateDate);

return dateString;

}

/**

* 将短时间格式字符串转换为时间 yyyy-MM-dd

*

* @param strDate

* @return

*/

public static Date strToDate(String strDate) {

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

ParsePosition pos = new ParsePosition(0);

Date strtodate = formatter.parse(strDate, pos);

return strtodate;

}

/**

* 得到现在时间

*

* @return

*/

public static Date getNow() {

Date currentTime = new Date();

return currentTime;

}

/**

* 提取一个月中的最后一天

*

* @param day

* @return

*/

public static Date getLastDate(long day) {

Date date = new Date();

long date_3_hm = date.getTime() - 3600000 * 34 * day;

Date date_3_hm_date = new Date(date_3_hm);

return date_3_hm_date;

}

/**

* 得到现在时间

*

* @return 字符串 yyyyMMdd HHmmss

*/

public static String getStringToday() {

Date currentTime = new Date();

SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd HHmmss");

String dateString = formatter.format(currentTime);

return dateString;

}

/**

* 得到现在小时

*/

public static String getHour() {

Date currentTime = new Date();

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

String dateString = formatter.format(currentTime);

String hour;

hour = dateString.substring(11, 13);

return hour;

}

/**

* 得到现在分钟

*

* @return

*/

public static String getTime() {

Date currentTime = new Date();

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

String dateString = formatter.format(currentTime);

String min;

min = dateString.substring(14, 16);

return min;

}

/**

* 根据用户传入的时间表示格式，返回当前时间的格式 如果是yyyyMMdd，注意字母y不能大写。

*

* @param sformat

* yyyyMMddhhmmss

* @return

*/

public static String getUserDate(String sformat) {

Date currentTime = new Date();

SimpleDateFormat formatter = new SimpleDateFormat(sformat);

String dateString = formatter.format(currentTime);

return dateString;

}

续：自己参考一下

/**

* 二个小时时间间的差值,必须保证二个时间都是"HH:MM"的格式，返回字符型的分钟

*/

public static String getTwoHour(String st1, String st2) {

String[] kk = null;

String[] jj = null;

kk = st1.split(":");

jj = st2.split(":");

if (Integer.parseInt(kk[0]) < Integer.parseInt(jj[0]))

return "0";

else {

double y = Double.parseDouble(kk[0]) + Double.parseDouble(kk[1]) / 60;

double u = Double.parseDouble(jj[0]) + Double.parseDouble(jj[1]) / 60;

if ((y - u) > 0)

return y - u + "";

else

return "0";

}

}

/**

* 得到二个日期间的间隔天数

*/

public static String getTwoDay(String sj1, String sj2) {

SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");

long day = 0;

try {

java.util.Date date = myFormatter.parse(sj1);

java.util.Date mydate = myFormatter.parse(sj2);

day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);

} catch (Exception e) {

return "";

}

return day + "";

}

/**

* 时间前推或后推分钟,其中JJ表示分钟.

*/

public static String getPreTime(String sj1, String jj) {

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

String mydate1 = "";

try {

Date date1 = format.parse(sj1);

long Time = (date1.getTime() / 1000) + Integer.parseInt(jj) * 60;

date1.setTime(Time * 1000);

mydate1 = format.format(date1);

} catch (Exception e) {

}

return mydate1;

}

/**

* 得到一个时间延后或前移几天的时间,nowdate为时间,delay为前移或后延的天数

*/

public static String getNextDay(String nowdate, String delay) {

try{

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

String mdate = "";

Date d = strToDate(nowdate);

long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;

d.setTime(myTime * 1000);

mdate = format.format(d);

return mdate;

}catch(Exception e){

return "";

}

}

/**

* 判断是否润年

*

* @param ddate

* @return

*/

public static boolean isLeapYear(String ddate) {

/**

* 详细设计： 1.被400整除是闰年，否则： 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年

* 3.能被4整除同时能被100整除则不是闰年

*/

Date d = strToDate(ddate);

GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();

gc.setTime(d);

int year = gc.get(Calendar.YEAR);

if ((year % 400) == 0)

return true;

else if ((year % 4) == 0) {

if ((year % 100) == 0)

return false;

else

return true;

} else

return false;

}

/**

* 返回美国时间格式 26 Apr 2006

*

* @param str

* @return

*/

public static String getEDate(String str) {

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

ParsePosition pos = new ParsePosition(0);

Date strtodate = formatter.parse(str, pos);

String j = strtodate.toString();

String[] k = j.split(" ");

return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);

}

/**

* 获取一个月的最后一天

*

* @param dat

* @return

*/

public static String getEndDateOfMonth(String dat) {// yyyy-MM-dd

String str = dat.substring(0, 8);

String month = dat.substring(5, 7);

int mon = Integer.parseInt(month);

if (mon == 1 || mon == 3 || mon == 5 || mon == 7 || mon == 8 || mon == 10 || mon == 12) {

str += "31";

} else if (mon == 4 || mon == 6 || mon == 9 || mon == 11) {

str += "30";

} else {

if (isLeapYear(dat)) {

str += "29";

} else {

str += "28";

}

}

return str;

}

/**

* 判断二个时间是否在同一个周

*

* @param date1

* @param date2

* @return

*/

public static boolean isSameWeekDates(Date date1, Date date2) {

Calendar cal1 = Calendar.getInstance();

Calendar cal2 = Calendar.getInstance();

cal1.setTime(date1);

cal2.setTime(date2);

int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);

if (0 == subYear) {

if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))

return true;

} else if (1 == subYear && 11 == cal2.get(Calendar.MONTH)) {

// 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周

if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))

return true;

} else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {

if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))

return true;

}

return false;

}

}

数据库中的Date一般对应java.sql.Date或java.sql.Timestamp

java.util.Date d = ...;

java.sql.Date sd = new java.sql.Date(d.getTime());

时间的写法汇总