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Joda-Time学习

2013-12-31 11:58 218 查看

Joda-Time学习

Joda-Time：

详细的介绍

http://www.ibm.com/developerworks/cn/java/j-jodatime.html

实例：

直接上实例

package com.mylearn.j2ee.jodatime;

import org.joda.time.DateTime;

import org.joda.time.DateTimeFieldType;

import java.util.Calendar;

import java.util.Date;

import java.util.Locale;

/**

* Created by IntelliJ IDEA.

* User: yingkuohao

* Date: 13-12-31

* Time: 上午10:44

* CopyRight:360buy

* Descrption:

* http://www.ibm.com/developerworks/cn/java/j-jodatime.html
* joda-time

* To change this template use File | Settings | File Templates.

*/

public class JodaTimeTest {

public static void main(String args[]) {

//1.随便构造一个日期

DateTime dateTime = new DateTime(2000, 1, 1, 0, 0, 0, 0);

System.out.println(dateTime.toString("yyyy-MM-dd HH:mm:ss"));

//2.获取当前日期

DateTime now = DateTime.now();

System.out.println(now.toString("yyyy-MM-dd HH:mm:ss"));

//3.根据当前日期操作，获取当前日期的一些属性

int hour = now.get(DateTimeFieldType.clockhourOfDay());

int dayOfYear = now.dayOfYear().get();

int dayOfMonth = now.dayOfMonth().get();

int dayOfWeek = now.dayOfWeek().get();

System.out.println("hour:--" + hour + "dayOfYear:--" + dayOfYear + "--dayOfMonth:--" + dayOfMonth + "--dayOfWeek:--" + dayOfWeek);

int hourOfDay = now.hourOfDay().get();

int millisOfDay = now.millisOfDay().get();

int millisOfSecond = now.millisOfSecond().get();

int era = now.era().get();

System.out.println("--hourOfDay:--" + hourOfDay + "millisOfDay:--" + millisOfDay + "--millisOfSecond:--" + millisOfSecond + "--era--" + era);

//4. 计算当前日期的前后

DateTime yesterday = now.minusDays(1);

DateTime tommorrow = now.plusDays(1);

System.out.println("yesterday:" + yesterday.toString("yyyy-MM-dd HH:mm:ss"));

System.out.println("tommorrow:" + tommorrow.toString("yyyy-MM-dd HH:mm:ss"));

//5. 计算当前日期1年前的1个月前一周的前一天前一小时前10分钟的前一秒时间

DateTime aDate = now.minusYears(1).minusMonths(1).minusWeeks(1).minusDays(1).minusHours(1).minusMinutes(10).minusSeconds(1);

System.out.println("aDate:" + aDate.toString("yyyy-MM-dd HH:mm:ss"));

//5.1与minus对应的plus方法，计算未来的时间

DateTime aFurtureTime = now.plusYears(1).plusMonths(1).plusWeeks(1).plusDays(1).plusHours(1).plusMinutes(10).plusSeconds(1);

System.out.println("aFurtureTime:" + aFurtureTime.toString("yyyy-MM-dd HH:mm:ss"));

//6. 日期的比较

boolean isBefore = now.isBefore(tommorrow);

boolean isAfter = now.isAfter(yesterday);

boolean isNow = now.isEqualNow();

System.out.println("isBefore=" + isBefore + ",isAfter=" + isAfter + "isNow=" + isNow);

//7. 日期和java API的互操作性

Calendar calendar = now.toCalendar(Locale.getDefault());

System.out.println("calendare date:" + calendar.getTime());

Date curDate = now.toDate();

System.out.println("java.util.date=" + curDate);

//8. 动态给日期赋值

DateTime curMonth = now.withMonthOfYear(10).withDayOfMonth(1).withHourOfDay(12).withMinuteOfHour(0).withSecondOfMinute(0);

System.out.println("dateTime1:" + curMonth.toString("yyyy-MM-dd HH:mm:ss"));

}

}

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