LocalDate类minusDays()方法 (LocalDate Class minusDays() method)

• minusDays() method is available in java.time package.

  minusDays()方法在java.time包中可用。

• minusDays() method is used to subtract the given days from this LocalDate and return the LocalDate.

  minusDays()方法用于从此LocalDate中减去给定的天数并返回LocalDate。

• minusDays() 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.

  minusDays()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• minusDays() method may throw an exception at the time of performing subtraction.

  minusDays()方法在执行减法时可能会引发异常。

  ArithmeticException: This exception may throw when the calculated result value exceeds the limit.

  ArithmeticException ：当计算结果值超过限制时，可能引发此异常。

Syntax:

句法：

    public LocalDate minusDays(long day_val);

Parameter(s):

参数：

• long day_val – represents the days to be subtracted from this LocalDate.

  long day_val –表示要从此LocalDate中减去的天数。

Return value:

返回值：

The return type of this method is LocalDate, it returns the LocalDate that holds the value subtracted the given days from this LocalDate.

此方法的返回类型为LocalDate ，它返回LocalDate，该LocalDate保留从此LocalDate中减去给定天数的值。

Example:

例：

// Java program to demonstrate the example 
// of minusDays(long day_val) method of LocalDate

import java.time.*;

public class MinusDaysOfLocalDate {
    public static void main(String args[]) {
        long days = 10;
        // Instantiates two LocalDate
        LocalDate l_da1 = LocalDate.parse("2007-04-04");
        LocalDate l_da2 = LocalDate.of(2008, Month.FEBRUARY, 06);

        // Display l_da1,l_da2 and days
        System.out.println("LocalDate l_da1,l_da2 : ");
        System.out.println("l_da1: " + l_da1);
        System.out.println("l_da2: " + l_da2);
        System.out.println("days to subtract: " + days);

        System.out.println();

        // Here, this method subtracts the given
        // days from this date l_da1 i.e. here we
        // are subtracting 10 days from the date
        // l_da1
        LocalDate minus_days = l_da1.minusDays(days);

        // Display minus_days
        System.out.println("l_da1.minusDays(days): " + minus_days);

        // Here, this method subtracts the given
        // days from this date l_da2 i.e. here we
        // are subtracting 10 days from the date
        // l_da2
        minus_days = l_da2.minusDays(days);

        // Display minus_days
        System.out.println("l_da2.minusDays(days): " + minus_days);
    }
}

Output

输出量

LocalDate l_da1,l_da2 : 
l_da1: 2007-04-04
l_da2: 2008-02-06
days to subtract: 10

l_da1.minusDays(days): 2007-03-25
l_da2.minusDays(days): 2008-01-27

翻译自: https://www.includehelp.com/java/localdate-minusdays-method-with-example.aspx