Java 中的 Period distants()方法，带示例

原文:https://www . geeksforgeeks . org/period-mins days-in-Java-method-with-examples/

Java 中 Period 类的 minusDays()方法用于从这个 Period 中减去天数。该功能仅在工作日运行，不影响年和月。

语法:

public Period minusDays(long daysToSubtract)

参数:该方法接受单个参数天数减去，即从周期中减去的天数。

返回值:该方法根据输入 中提供的期间减去指定天数返回一个期间。它不能为空。

异常:它抛出一个算术异常。如果发生数字溢出，将捕获此异常。

下面的程序说明了上述方法:

程序 1 :

// Java code to show the function minusDays()
// to subtract the number of days from given periods

import java.time.Period;
import java.time.temporal.ChronoUnit;

public class PeriodClass {

    // Function to subtract two given periods
    static void subtractDays(Period p1, int daystoSubtract)
    {

        System.out.println(p1.minusDays(daystoSubtract));
    }

    // Driver Code
    public static void main(String[] args)
    {

        // Defining first period
        int year = 4;
        int months = 11;
        int days = 10;
        Period p1 = Period.of(year, months, days);

        int daystoSubtract = 8;

        subtractDays(p1, daystoSubtract);
    }
}

Output:

P4Y11M2D

程序 2 :

// Java code to show the function minusDays()
// to subtract the number of days from given periods
import java.time.Period;
import java.time.temporal.ChronoUnit;

public class PeriodClass {

    // Function to subtract two given periods
    static void subtractDays(Period p1, int daystoSubtract)
    {

        System.out.println(p1.minusDays(daystoSubtract));
    }

    // Driver Code
    public static void main(String[] args)
    {
        // Defining first period
        int year = -4;
        int months = -11;
        int days = 0;
        Period p1 = Period.of(year, months, days);

        int daystoSubtract = 8;

        subtractDays(p1, daystoSubtract);
    }
}

Output:

P-4Y-11M-8D

参考:https://docs . Oracle . com/javase/8/docs/API/Java/time/period . html #不稳定天数-长-

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