http://joda-time.sourceforge.net/
版本:joda-time-2.1.jar
1、時間類得作成
- //方法一:取系統點間
- DateTime dt1 = new DateTime();
- //方法二:通過java.util.Date對象生成
- DateTime dt2 = new DateTime(new Date());
- //方法三:指定年月日點分秒生成(參數依次是:年,月,日,時,分,秒,毫秒)
- DateTime dt3 = new DateTime(2012, 5, 20, 13, 14, 0, 0);
- //方法四:ISO8601形式生成
- DateTime dt4 = new DateTime("2012-05-20");
- DateTime dt5 = new DateTime("2012-05-20T13:14:00");
- //只需要年月日的時候
- LocalDate localDate = new LocalDate(2009, 9, 6);// September 6, 2009
- //只需要時分秒毫秒的時候
- LocalTime localTime = new LocalTime(13, 30, 26, 0);// 1:30:26PM
2、獲取年月日點分秒
- DateTime dt = new DateTime();
- //年
- int year = dt.getYear();
- //月
- int month = dt.getMonthOfYear();
- //日
- int day = dt.getDayOfMonth();
- //星期
- int week = dt.getDayOfWeek();
- //點
- int hour = dt.getHourOfDay();
- //分
- int min = dt.getMinuteOfHour();
- //秒
- int sec = dt.getSecondOfMinute();
- //毫秒
- int msec = dt.getMillisOfSecond();
3、星期的特殊處理
- DateTime dt = new DateTime();
- //星期
- switch(dt.getDayOfWeek()) {
- case DateTimeConstants.SUNDAY:
- System.out.println("星期日");
- break;
- case DateTimeConstants.MONDAY:
- System.out.println("星期一");
- break;
- case DateTimeConstants.TUESDAY:
- System.out.println("星期二");
- break;
- case DateTimeConstants.WEDNESDAY:
- System.out.println("星期三");
- break;
- case DateTimeConstants.THURSDAY:
- System.out.println("星期四");
- break;
- case DateTimeConstants.FRIDAY:
- System.out.println("星期五");
- break;
- case DateTimeConstants.SATURDAY:
- System.out.println("星期六");
- break;
- }
4、與JDK日期對象的轉換
- DateTime dt = new DateTime();
- //轉換成java.util.Date對象
- Date d1 = new Date(dt.getMillis());
- Date d2 = dt.toDate();
- //轉換成java.util.Calendar對象
- Calendar c1 = Calendar.getInstance();
- c1.setTimeInMillis(dt.getMillis());
- Calendar c2 = dt.toCalendar(Locale.getDefault());
5、日期前後推算
- DateTime dt = new DateTime();
- //昨天
- DateTime yesterday = dt.minusDays(1);
- //明天
- DateTime tomorrow = dt.plusDays(1);
- //1個月前
- DateTime before1month = dt.minusMonths(1);
- //3個月後
- DateTime after3month = dt.plusMonths(3);
- //2年前
- DateTime before2year = dt.minusYears(2);
- //5年後
- DateTime after5year = dt.plusYears(5);
6、取特殊日期
- DateTime dt = new DateTime();
- //月末日期
- DateTime lastday = dt.dayOfMonth().withMaximumValue();
- //90天后那周的週一
- DateTime firstday = dt.plusDays(90).dayOfWeek().withMinimumValue();
7、時區
- //默認設置爲日本時間
- DateTimeZone.setDefault(DateTimeZone.forID("Asia/Tokyo"));
- DateTime dt1 = new DateTime();
- //倫敦時間
- DateTime dt2 = new DateTime(DateTimeZone.forID("Europe/London"));
8、計算區間
- DateTime begin = new DateTime("2012-02-01");
- DateTime end = new DateTime("2012-05-01");
- //計算區間毫秒數
- Duration d = new Duration(begin, end);
- long time = d.getMillis();
- //計算區間天數
- Period p = new Period(begin, end, PeriodType.days());
- int days = p.getDays();
- //計算特定日期是否在該區間內
- Interval i = new Interval(begin, end);
- boolean contained = i.contains(new DateTime("2012-03-01"));
9、日期比較
- DateTime d1 = new DateTime("2012-02-01");
- DateTime d2 = new DateTime("2012-05-01");
- //和系統時間比
- boolean b1 = d1.isAfterNow();
- boolean b2 = d1.isBeforeNow();
- boolean b3 = d1.isEqualNow();
- //和其他日期比
- boolean f1 = d1.isAfter(d2);
- boolean f2 = d1.isBefore(d2);
- boolean f3 = d1.isEqual(d2);
10、格式化輸出
- DateTime dateTime = new DateTime();
- String s1 = dateTime.toString("yyyy/MM/dd hh:mm:ss.SSSa");
- String s2 = dateTime.toString("yyyy-MM-dd HH:mm:ss");
- String s3 = dateTime.toString("EEEE dd MMMM, yyyy HH:mm:ssa");
- String s4 = dateTime.toString("yyyy/MM/dd HH:mm ZZZZ");
- String s5 = dateTime.toString("yyyy/MM/dd HH:mm Z");
Jodd的JDateTime也提供了很不錯的時間API。
參考資料:http://www.ibm.com/developerworks/cn/java/j-jodatime.html