Java中的 YearMonth minusYears() 示例

Java中YearMonth类的minusYears()方法用于返回减去指定年数的 YearMonth 的副本。

句法：

public YearMonth minusYears(long yearsToSubtract)

参数：此方法接受yearsToSubtract作为参数，表示要减去的年份。它可能是负面的。

返回值：它返回基于此年月减去年份的YearMonth 。

异常：如果结果超出支持的范围，此方法将引发DateTimeException 。

下面的程序说明了Java中 YearMonth 的 minusYears() 方法：

方案一：

// Java program to demonstrate
// YearMonth.minusYears() method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create YearMonth object
        YearMonth yearmonth
            = YearMonth.parse("2020-05");
        // It is May 2020
  
        // apply minusYears() method
        // of YearMonth class
        YearMonth result
            = yearmonth.minusYears(5);
        // Subtracting 5 years will turn it
        // into May 2015
  
        // print year and month both
        System.out.println(
            "Modified YearMonth: "
            + result);
    }
}

输出：

Modified YearMonth: 2015-05

方案二：

// Java program to demonstrate
// YearMonth.minusYears() method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create YearMonth object
        YearMonth yearmonth
            = YearMonth.of(2019, 10);
  
        // apply minusYears() method
        // of YearMonth class
        YearMonth result
            = yearmonth.minusYears(10);
        // Subtracting 10 years will
        // turn it into October 2009
  
        // print only year
        System.out.println(
            "Modified Year: "
            + result.get(ChronoField.YEAR));
    }
}

输出：

Modified Year: 2009

参考资料： https: Java/time/YearMonth.html#minusYears(long)