Java 中的 Duration toHours()方法，示例

原文:https://www . geesforgeks . org/duration-to hour-method-in-Java-with-examples/

使用 java.time 包中持续时间类的to hour()方法获取该持续时间的小时数值。

语法:

public long toHours()

参数:该方法不接受任何参数。

返回值:该方法返回一个长值，即该时长内的小时数。

以下示例说明了 Duration.toHours()方法:

例 1:

// Java code to illustrate toHours() method

import java.time.Duration;

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

        // Duration using parse() method
        Duration duration
            = Duration.parse("P2DT3H4M");

        System.out.println("Duration: "
                           + duration);

        // Get the number of hours
        // using toHours() method
        System.out.println(duration.toHours());
    }
}

输出:

Duration: PT51H4M
51

例 2:

// Java code to illustrate toHours() method

import java.time.Duration;

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

        // Duration using ofHours() method
        Duration duration
            = Duration.ofHours(10);

        System.out.println("Duration: "
                           + duration);

        // Get the number of hours
        // using toHours() method
        System.out.println(duration.toHours());
    }
}

输出:

Duration: PT10H
10

参考:https://docs . Oracle . com/javase/9/docs/API/Java/time/duration . html # to hours–

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