java clock计时_Java Clock类| offset（）方法与示例

java clock计时

Clock Class offset()方法 (Clock Class offset() method)

offset() method is available in java.time package.
offset()方法在java.time包中可用。
offset() method is used to generate a new Clock from the given base clock with added the given Duration.
offset()方法用于根据给定的基本时钟加上给定的Duration来生成新Clock。
offset() method is a static method, it is accessible with the class name and if we try to access the method with the class object then we will not get an error.
offset()方法是一个静态方法，可以使用类名进行访问，如果尝试使用类对象访问该方法，则不会出错。
offset() method does not throw an exception at the time of representing Clock.
offset()方法在表示Clock时不会引发异常。

Syntax:

句法：

    public static Clock offset(Clock base_cl, Duration off);

Parameter(s):

参数：

Clock base_cl – represents the base clock in which to add the given duration.
Clock base_cl –表示要添加给定持续时间的基本时钟。
Duration off – represents the offset to add to the given base clock (base_cl).
持续时间关闭 –表示要添加到给定基本时钟(base_cl)的偏移量。

Return value:

返回值：

The return type of this method is Clock, it returns the Clock object that is available with added the given offset.

此方法的返回类型为Clock ，它返回添加了给定偏移量后可用的Clock对象。

Example:

例：

// Java program to demonstrate the example 
// of offset(Clock base_cl, Duration off) method of Clock
import java.time.*;
public class OffsetOfClock {
public static void main(String args[]) {
// Instantiates two ZoneId for Accra and Asmara
ZoneId zone_1 = ZoneId.of("Africa/Accra");
ZoneId zone_2 = ZoneId.of("Africa/Asmara");
// Initialize two Clock objects 
// and one Duration
Clock cl1 = Clock.system(zone_1);
Clock cl2 = Clock.system(zone_2);
Duration offset = Duration.ofMinutes(20);
// generates a new Clock from the
// given clock(cl1) with the given duration added
Clock cl_offset = cl1.offset(cl1, offset);
// Display cl1 and cl_offset instant
System.out.println("cl1.instant(): " + cl1.instant());
System.out.println("cl_offset.instant(): " + cl_offset.instant());
System.out.println();
// generates a new Clock from the
// given clock(cl2) with the given duration added
cl_offset = cl2.offset(cl2, offset);
// Display cl2 and cl_offset instant
System.out.println("cl2.instant(): " + cl2.instant());
System.out.println("cl_offset.instant(): " + cl_offset.instant());
}
}

Output

输出量

cl1.instant(): 2020-05-13T19:04:36.242559Z
cl_offset.instant(): 2020-05-13T19:24:36.322896Zcl2.instant(): 2020-05-13T19:04:36.324623Z
cl_offset.instant(): 2020-05-13T19:24:36.327267Z