java.time.Duration.withNanos() 方法示例

package com.codingdict;

import java.time.Duration;

public class DurationDemo {
   public static void main(String[] args) {

      Duration duration = Duration.ofDays(2);
      System.out.println(duration.toString());  
      duration = duration.withNanos(2000);
      System.out.println(duration.toString());  
   }
}