java.time.Duration

1 java.time.Duration介绍

Java Duration类用于以秒和纳秒为单位测量时间。它继承了Object类并实现Comparable接口。

2 java.time.Duration声明

让我们来看一下java.time.Duration类的声明。

public final class Duration extends Object   
implements TemporalAmount, Comparable<Duration>, Serializable  

3 java.time.Duration方法

4 java.time.Duration案例1

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.time.Duration的例子
 */
import java.time.*;  
import java.time.temporal.ChronoUnit;  
public class DurationExample1 {  
  public static void main(String[] args) {  
    Duration d = Duration.between(LocalTime.NOON,LocalTime.MAX);  
    System.out.println(d.get(ChronoUnit.SECONDS));    
  }  
}  

输出结果为：

43199

5 java.time.Duration案例2

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.time.Duration的例子
 */
import java.time.*;  
public class DurationExample2 {  
  public static void main(String[] args) {  
      Duration d1 = Duration.between(LocalTime.MAX,LocalTime.NOON);  
      System.out.println(d1.isNegative());  
      Duration d2 = Duration.between(LocalTime.NOON,LocalTime.MAX);  
              System.out.println(d2.isNegative());      
  }  
}  

输出结果为：

true
false