红薯 Java 8 的日期时间新用法

http://insightfullogic.com/blog/2012/dec/14/date-and-time-java-8-1/

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代码片段(5)

[代码] [Java]代码

01	// The current date and time

02	LocalDateTime.now();

03

04	// construct from values

05	LocalDate.of(2012, 12, 12);

06	LocalDate.of(2012, Month.DECEMBER, 12);

07

08	// Somewhere in the middle of 1970

09	LocalDate.ofEpochDay(150);

10

11	// the train I took home today

12	LocalTime.of(17, 18);

13

14	// From a String

15	LocalTime.parse("10:15:30");

[代码] [Java]代码

01	LocalDateTime timePoint = ...

02

03	LocalDate theDate = timePoint.getDate();

04

05	int monthAsInt = timePoint.getMonthValue();

06	Month month = timePoint.getMonth();

07

08	int day = timePoint.getDayOfMonth();

09	day = timePoint.getDayOfYear();

10

11	timePoint.getSecond();

12	timePoint.getNano();

[代码] [Java]代码

1	LocalDateTime timePoint = ...

2

3	// Set the value, returning a new object

4	LocalDateTime another = timePoint.withDayOfMonth(10).withYear(2010);

5

6	// You can use direct manipulation methods, or pass a value and field pair

7	LocalDateTime yetAnother = another.plusWeeks(3).plus(3, WEEKS);

[代码] [Java]代码

01	import static javax.time.calendrical.DateTimeAdjusters.*;

02

03	LocalDateTime timePoint = ...

04

05	// Statically imported (see above)

06	foo = timePoint.with(lastDayOfMonth());

07	bar = timePoint.with(firstDayOfYear());

08

09	// Adjusters can also be parameterised

10	timePoint.with(lastInMonth(TUESDAY));

11	timePoint.with(previousOrSame(WEDNESDAY));

12

13	// Using value classes as adjusters

14	timePoint.with(LocalTime.now());

[代码] [Java]代码

1	LocalDate date = ...

2	date.truncatedTo(DAYS);

3

4	LocalTime time = ...

5	time.truncatedTo(MICROS);

6	time.truncatedTo(SECONDS);