Java 中的年月日(带示例)

原文:https://www . geesforgeks . org/year month-MINUS-years-in-Java-with-examples/

Java 中 YearMonth 类的MINUS year()方法用来返回这个 YearMonth 减去指定年数的副本。

语法:

public YearMonth minusYears(long yearsToSubtract)

参数:该方法接受年到子轨迹作为代表要减去的年的参数。可能是负面的。

返回值:根据这个年-月减去年，返回一个年-月。

异常:如果结果超出支持范围，该方法抛出日期时间异常。

下面的程序说明了 Java 中的年月的负年()方法:

程序 1:

// 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

程序二:

// 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

参考文献:https://docs . Oracle . com/javase/10/docs/API/Java/time/year month . html # MINUS years(长)

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