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Java ZonedDateTime plusNanos()用法及代码示例

ZonedDateTime类的plusNanos()方法用于在此ZonedDateTime中添加纳秒数,并在添加后返回ZonedDateTime的副本。此方法在即时时间轴上起作用,在返回的时间轴上增加一纳秒,则在一纳秒后返回时间轴。请注意,此方法与几天,几个月和几年使用的方法不同。此实例是不可变的,不受此方法调用的影响。

用法:

public ZonedDateTime plusNanos(long nanoseconds)

参数:此方法接受单个参数纳秒,该参数代表要添加的纳秒,它可以为负。


返回值:此方法基于此日期时间(添加了纳秒)返回ZonedDateTime。

异常:如果结果超出支持的日期范围,则此方法将引发DateTimeException。

以下示例程序旨在说明plusNanos()方法:
示例1:

// Java program to demonstrate 
// ZonedDateTime.plusNanos() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a ZonedDateTime object 
        ZonedDateTime zoneddatetime 
            = ZonedDateTime.parse( 
                "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]"); 
  
        // print instance 
        System.out.println("ZonedDateTime before"
                           + " adding nanoseconds: "
                           + zoneddatetime); 
  
        // add 30000000 nanoseconds 
        ZonedDateTime returnvalue 
            = zoneddatetime.plusNanos(30000000); 
  
        // print result 
        System.out.println("ZonedDateTime after "
                           + " adding nanoseconds: "
                           + returnvalue); 
    } 
}
输出:

ZonedDateTime before adding nanoseconds: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
ZonedDateTime after adding nanoseconds: 2018-12-06T19:21:12.153+05:30[Asia/Calcutta]

示例2:

// Java program to demonstrate 
// ZonedDateTime.plusNanos() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a ZonedDateTime object 
        ZonedDateTime zoneddatetime 
            = ZonedDateTime.parse( 
                "2018-10-25T23:12:31.123+02:00[Europe/Paris]"); 
  
        // print instance 
        System.out.println("ZonedDateTime before"
                           + " adding nanoseconds: "
                           + zoneddatetime); 
  
        // add 5200000 nanoseconds 
        ZonedDateTime returnvalue 
            = zoneddatetime.plusNanos(5200000); 
  
        // print result 
        System.out.println("ZonedDateTime after "
                           + " adding nanoseconds: "
                           + returnvalue); 
    } 
}
输出:

ZonedDateTime before adding nanoseconds: 2018-10-25T23:12:31.123+02:00[Europe/Paris]
ZonedDateTime after adding nanoseconds: 2018-10-25T23:12:31.128200+02:00[Europe/Paris]

参考: https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#plusNanos(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 ZonedDateTime plusNanos() method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文的传播和使用请遵循“署名-相同方式共享 4.0 国际 (CC BY-SA 4.0)”协议。