LocalDate類minusWeeks()方法 (LocalDate Class minusWeeks() method)

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

  minusWeeks()方法在java.time包中可用。

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

  minusWeeks()方法用于從此LocalDate中減去給定的星期并返回LocalDate。

• minusWeeks() 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.

  minusWeeks()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

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

  minusWeeks()方法在執行減法時可能會引發異常。

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

  DateTimeException ：當計算結果值超出限制時，可能引發此異常。

Syntax:

句法：

    public LocalDate minusWeeks(long weeks_val);

Parameter(s):

參數：

• long weeks_val – represents the weeks to be subtracted from this LocalDate.

  long week_val –表示要從此LocalDate中減去的周數。

Return value:

返回值：

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

此方法的返回類型為LocalDate ，它返回LocalDate，該LocalDate保留從此LocalDate中減去給定周數的值。

Example:

例：

// Java program to demonstrate the example 
// of minusWeeks(long weeks_val) method 
// of LocalDate
import java.time.*;
public class MinusWeeksOfLocalDate {
public static void main(String args[]) {
long weeks = 3;
// 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 weeks
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("weeks to subtract: " + weeks);
System.out.println();
// Here, this method subtracts the
// given weeks from this date l_da1
// i.e. here we are subtracting 3
// weeks from the date l_da1
LocalDate minus_weeks = l_da1.minusWeeks(weeks);
// Display minus_weeks
System.out.println("l_da1.minusWeeks(weeks): " + minus_weeks);
// Here, this method subtracts the 
// given weeks from this date l_da2
// i.e. here we are subtracting 3
// weeks from the date l_da2
minus_weeks = l_da2.minusWeeks(weeks);
// Display minus_weeks
System.out.println("l_da2.minusWeeks(weeks): " + minus_weeks);
}
}

Output

輸出量

LocalDate l_da1, l_da2: 
l_da1: 2007-04-04
l_da2: 2008-02-06
weeks to subtract: 3l_da1.minusWeeks(weeks): 2007-03-14
l_da2.minusWeeks(weeks): 2008-01-16

翻譯自: https://www.includehelp.com/java/localdate-minusweeks-method-with-example.aspx