Java LocalTime minusNanos()用法及代码示例

LocalTime类的minusNanos()方法用于从此LocalTime中减去指定的毫微秒值，并将结果作为LocalTime对象返回。这一瞬间是一成不变的。计算大约在午夜结束。

用法:

public LocalTime minusNanos(long nanosecondsToSubtract)

参数：此方法接受单个参数nanosecondsToSubtract，该参数是要减去的纳秒值，它可以是负值。

返回值：此方法基于此时间返回LocalTime，并减去纳秒。

以下示例程序旨在说明minusNanos()方法：

示例1:

// Java program to demonstrate 
// LocalTime.minusNanos() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a LocalTime object 
        LocalTime time 
            = LocalTime.parse("19:34:50.63"); 
  
        // print LocalTime 
        System.out.println("LocalTime before subtraction: "
                           + time); 
  
        // subtract 34000000 nanoseconds using minusNanos() 
        LocalTime value = time.minusNanos(34000000); 
  
        // print result 
        System.out.println("LocalTime after subtraction: "
                           + value); 
    } 
}

输出：

LocalTime before subtraction: 19:34:50.630
LocalTime after subtraction: 19:34:50.596

示例2:

// Java program to demonstrate 
// LocalTime.minusNanos() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a LocalTime object 
        LocalTime time 
            = LocalTime.parse("01:00:01"); 
  
        // print LocalTime 
        System.out.println("LocalTime before subtraction: "
                           + time); 
  
        // subtract 971200000 nanoseconds  using minusNanos() 
        LocalTime value = time.minusNanos(971200000); 
  
        // print result 
        System.out.println("LocalTime after subtraction: "
                           + value); 
    } 
}

输出：

LocalTime before subtraction: 01:00:01
LocalTime after subtraction: 01:00:00.028800

参考文献： https://docs.oracle.com/javase/10/docs/api/java/time/LocalTime.html#minusNanos(long)

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注：本文由纯净天空筛选整理自AmanSingh2210大神的英文原创作品 LocalTime minusNanos() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。