Java8 Date/time (date) Usage Introduction

Special Note : LocalDateTime for the calculation of the date and time provides a great convenience, in the construction of object/operation/tostring, such as convenience are very convenient.

3 Common Classes :

Java.time.localdatetime;java.time.localdate;java.time.localtime;

Recommended Multi-use LocalDateTime

Common Expressions :
Present: LocalDateTime now = Localdatetime.now ();
Today: localdate day = Localdate.now ();

To create an object from a property :
localdatetime.of (int year, month month, int dayofmonth, int hour, int minute, C6>int Second, int nanoofsecond)

convert each other :

Localdate date == = = = Localdatetime.of (date.getyear () + 1900, Date.getmonth () + 1  New// will lose Nanoofsecond

Component Compatibility :

• MyBatis (mybatis-spring v1.3.0) is not currently supported LocalDateTime
• Json (Com.fasterxml.jackson.core v2.5.4) seems to have no special support, the result of serialization is as follows:

{  "month": "December",  "year":,  "DayOfMonth": 7,  " DayOfWeek ":" Thursday ",  " dayofyear ": 341,  " Monthvalue ":"  Hour ": Ten,  "minute": 4,  "nano": 228000000,  "second":  "Chronology": {    "id": "ISO",    "CalendarType": "iso8601"  }}

Therefore, when interacting with the database, it is recommended to use java.util.Date when interacting with the Json

Summary :
In the current case, business calculations suggest using LocalDateTime, which is recommended for conversion to Date outside of business calculations

by the To:
LocalDateTime is a great convenience for the calculation of date and time, and there are many other advantages. Details Java8 (date time) API Guide] (http://www.importnew.com/14140.html

Java8 Date/time (date) Usage Introduction