java 根据类名示例化类

LocalDateTime类atOffset()方法 (LocalDateTime Class atOffset() method)

• atOffset() method is available in java.time package.

  atOffset()方法在java.time包中可用。

• atOffset() method is used to create an OffsetDateTime to merge this LocalDateTime with the given offset.

  atOffset()方法用于创建OffsetDateTime，以将此LocalDateTime与给定的偏移量合并。

• atOffset() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  atOffset()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• atOffset() method does not throw an exception at the time of representing LocalDateTime.

  atOffset()方法在表示LocalDateTime时不会引发异常。

Syntax:

句法：

    public OffsetDateTime atOffset(ZoneOffset off);

Parameter(s):

参数：

• ZoneOffset off – represents the zone offset to merge with this LocalDateTime.

  ZoneOffset off –表示要与此LocalDateTime合并的区域偏移量。

Return value:

返回值：

The return type of this method is OffsetDateTime, it returns OffsetDateTime object that holds the value merged this LocalDateTime with the given offset.

此方法的返回类型为OffsetDateTime ，它返回OffsetDateTime对象，该对象包含将此LocalDateTime与给定的偏移量合并的值。

Example:

例：

// Java program to demonstrate the example
// of atOffset(ZoneOffset off) method
// of LocalDateTime
import java.time.*;
public class AtOffsetOfLocalDateTime {public static void main(String args[]) {// Instantiates two LocalDateTime
// and a ZonedOffset
LocalDateTime da_ti1 = LocalDateTime.parse("2005-10-05T10:10:10");
LocalDateTime da_ti2 = LocalDateTime.now();
ZoneOffset off = ZoneOffset.ofHoursMinutes(2, 2);
// Display da_ti1, da_ti2
// and off
System.out.println("LocalDateTime da_ti1 and da_ti2: ");
System.out.println("da_ti1: " + da_ti1);
System.out.println("da_ti2: " + da_ti2);
System.out.println();
// Here, this method creates an OffsetDateTime
// by merging this date-time (da_ti1) with
// the given offset (off) i.e.
// da_ti1 + off(in hours , in minutes)
OffsetDateTime off_da_time = da_ti1.atOffset(off);
// Display updated off_da_time
System.out.println("da_ti1.atOffset(off): " + off_da_time);
// Here, this method creates an OffsetDateTime
// by merging this date-time (da_ti2) with
// the given offset (off) i.e.
// da_ti2 + off(in hours)
off_da_time = da_ti2.atOffset(ZoneOffset.ofHours(4));
// Display updated off_da_time
System.out.print("da_ti2.atOffset(ZoneOffset.ofHours(4)): ");
System.out.println(off_da_time);
}
}

Output

输出量

LocalDateTime da_ti1 and da_ti2:
da_ti1: 2005-10-05T10:10:10
da_ti2: 2020-06-04T08:02:20.579734da_ti1.atOffset(off): 2005-10-05T10:10:10+02:02
da_ti2.atOffset(ZoneOffset.ofHours(4)): 2020-06-04T08:02:20.579734+04:00

翻译自: https://www.includehelp.com/java/localdatetime-atoffset-method-with-example.aspx

java 根据类名示例化类