duration java_Java Duration类| plusDays()方法与示例
duration java
持续时间类plusDays()方法 (Duration Class plusDays() method)
plusDays() method is available in java.time package.
plusDays()方法在java.time包中可用。
plusDays() method is used to add the given duration in days to this Duration and return the Duration.
plusDays()方法用于将以天为单位的给定持续时间添加到此Duration中,并返回Duration。
plusDays() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
plusDays()方法是一个非静态方法,只能通过类对象访问,如果尝试使用类名访问该方法,则会收到错误消息。
plusDays() method may throw an exception at the time of performing addition.
plusDays()方法在执行加法时可能会引发异常。
ArithmeticException: This exception may throw when the calculated results exceed the length of this Duration.
ArithmeticException :当计算结果超过此Duration的长度时,可能引发此异常。
Syntax:
句法:
public Duration plusDays(long day_val);
Parameter(s):
参数:
long day_val – represents the day value to add to this Duration.
long day_val –表示要添加到此工期的天数。
Return value:
返回值:
The return type of this method is Duration, it returns the Duration that holds the value added the given days to this Duration.
此方法的返回类型为Duration ,它返回的Duration包含将给定天数添加到此Duration中的值。
Example:
例:
// Java program to demonstrate the example
// of plusDays(long day_val) method of Duration
import java.time.*;
public class PlusDaysOfDuration {public static void main(String args[]) {long days = 2;
// Instantiates two Duration objects
Duration du1 = Duration.ofDays(3);
Duration du2 = Duration.parse("P2DT20M");
// Display du1, du2
System.out.println("du1: " + du1);
System.out.println("du2: " + du2);
System.out.println("days to add: " + days);
System.out.println();
// adds the given duration in days with this
// Duration du1 and returns the Duration
// i.e. here we are adding the given 2 days
// with this du1 that holds the value of 3 days
// i.e.( 72 hrs + 48 hrs = 120 hrs )
Duration plus_val = du1.plusDays(days);
// Display plus_val
System.out.println("du1.plusDays(days): " + plus_val);
// adds the given duration in days with this
// Duration du2 and returns the Duration
// i.e. here we are adding the given 2 days
// with this du2 that holds the value of 2D:20M
// i.e.( 48 hrs + 48 hrs = 96 hrs )
plus_val = du2.plusDays(days);
// Display plus_val
System.out.println("du2.plusDays(days): " + plus_val);
}
}
Output
输出量
du1: PT72H
du2: PT48H20M
days to add: 2du1.plusDays(days): PT120H
du2.plusDays(days): PT96H20M
翻译自: https://www.includehelp.com/java/duration-plusdays-method-with-example.aspx
duration java
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