Java YearMonth minus(TemporalAmount)用法及代碼示例

從Yearyearth對象減去指定的TemporalAmount數量後，使用YearMonth類的minus(TemporalAmount)方法返回Yearyear的副本。如果無法從YearMonth中減去指定的單位，則會引發異常。傳遞的TemporalAmount是根據Period對象創建的。此實例是不可變的，不受此方法調用的影響。

用法:

public YearMonth minus(TemporalAmount amountToSubtract)

參數：此方法僅接受一個參數TemporalAmount，該參數表示從YearMonth對象減去的數量。

返回值：此方法基於此YearMonth返回YearMonth，減去指定的數量。

異常：此方法引發以下異常：

DateTimeException-如果無法進行減法，則拋出此異常。
ArithmeticException-如果發生數字溢出，則拋出此異常。

以下示例程序旨在說明減號(TemporalAmount amountToSubtract)方法：

示例1:

// Java program to demonstrate 
// YearMonth.minus(TemporalAmount amountToSubtract) method 
  
import java.time.*; 
import java.time.temporal.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
        // create a YearMonth object 
        YearMonth thisYearMonth = YearMonth.of(2019, 11); 
  
        // print instance 
        System.out.println("YearMonth :"
                           + thisYearMonth); 
  
        // create temporalAmount object from period class 
        // passing temporalAmount to 
        // minus() method 
        YearMonth value 
            = thisYearMonth.minus( 
                Period.ofYears(22)); 
  
        // print result 
        System.out.println("Value after Subtraction: "
                           + value); 
    } 
}

輸出：

YearMonth :2019-11
Value after Subtraction: 1997-11

示例2:

// Java program to demonstrate 
// YearMonth.minus(TemporalAmount amountToSubtract) method 
  
import java.time.*; 
import java.time.temporal.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
        // create a YearMonth object 
        YearMonth thisYearMonth = YearMonth.of(2022, 11); 
  
        // print instance 
        System.out.println("YearMonth :"
                           + thisYearMonth); 
  
        // create temporalAmount object from period class 
        // passing temporalAmount to 
        // minus() method 
        YearMonth value 
            = thisYearMonth.minus( 
                Period.ofMonths(20)); 
  
        // print result 
        System.out.println("Value after Subtraction: "
                           + value); 
    } 
}

輸出：

YearMonth :2022-11
Value after Subtraction: 2021-03

參考文獻：
https://docs.oracle.com/javase/10/docs/api/java/time/YearMonth.html#minus(java.time.temporal.TemporalAmount)

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注：本文由純淨天空篩選整理自AmanSingh2210大神的英文原創作品 YearMonth minus(TemporalAmount) method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。