Java中的 Duration compareTo(Duration) 方法及示例

Java.time 包中Duration 类的compareTo(Duration)方法用于比较这个持续时间和作为参数传递的持续时间。

句法：

public int compareTo(Duration otherDuration)

参数：此方法接受参数otherDuration ，该参数是与此持续时间进行比较的持续时间。

返回值：该方法返回一个int值，负值表示otherDuration大于该值，0表示otherDuration等于该时长，正值表示该时长大于otherDuration。

下面的示例说明了 Duration.compareTo() 方法：

示例 1：

// Java code to illustrate compareTo() method
  
import java.time.Duration;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Duration using parse() method
        Duration duration1
            = Duration.parse("P2DT3H4M");
  
        // Duration using ofDays() method
        Duration duration2
            = Duration.ofDays(10);
  
        // Compare the durations
        // using compareTo() method
        System.out.println(duration1
                               .compareTo(duration2));
    }
}

输出：

-1

示例 2：

// Java code to illustrate compareTo() method
  
import java.time.Duration;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Duration using ofHours() method
        Duration duration1
            = Duration.ofHours(5);
  
        // Duration using ofHours() method
        Duration duration2
            = Duration.ofHours(5);
  
        // Compare the durations
        // using compareTo() method
        System.out.println(duration1
                               .compareTo(duration2));
    }
}

输出：

0

示例 3：

// Java code to illustrate compareTo() method
  
import java.time.Duration;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Duration using ofDays() method
        Duration duration1
            = Duration.ofDays(5);
  
        // Duration using ofHours() method
        Duration duration2
            = Duration.ofHours(5);
  
        // Compare the durations
        // using compareTo() method
        System.out.println(duration1
                               .compareTo(duration2));
    }
}

输出：

1

参考： Oracle 文档