Java ZonedDateTime minusMonths()用法及代码示例

ZonedDateTime类的minusMonths()方法用于减去此ZonedDateTime中的月份数，并在减去后返回ZonedDateTime的副本。此实例是不可变的，不受此方法调用的影响。

用法:

public ZonedDateTime minusMonths(long months)

参数：此方法接受单个参数months，它代表要减去的月份，可以为负数。

返回值：此方法基于此日期时间返回一个ZonedDateTime，并减去月份，而不是null。

异常：如果结果超出支持的日期范围，则此方法将引发DateTimeException。

以下示例程序旨在说明minusMonths()方法：
示例1:

// Java program to demonstrate 
// ZonedDateTime.minusMonths() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a ZonedDateTime object 
        ZonedDateTime zoneddatetime 
            = ZonedDateTime.parse( 
                "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]"); 
  
        // print instance 
        System.out.println("ZonedDateTime before"
                           + " subtracting months: "
                           + zoneddatetime); 
  
        // subtract 10 months 
        ZonedDateTime returnvalue 
            = zoneddatetime.minusMonths(10); 
  
        // print result 
        System.out.println("ZonedDateTime after "
                           + " subtracting 10 months: "
                           + returnvalue); 
    } 
}

输出：

ZonedDateTime before subtracting months: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
ZonedDateTime after subtracting 10 months: 2018-02-06T19:21:12.123+05:30[Asia/Calcutta]

示例2:

// Java program to demonstrate 
// ZonedDateTime.minusMonths() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a ZonedDateTime object 
        ZonedDateTime zoneddatetime 
            = ZonedDateTime.parse( 
                "2018-10-25T23:12:31.123+02:00[Europe/Paris]"); 
  
        // print instance 
        System.out.println("ZonedDateTime before"
                           + " subtracting months: "
                           + zoneddatetime); 
  
        // subtract 2 months 
        ZonedDateTime returnvalue 
            = zoneddatetime.minusMonths(2); 
  
        // print result 
        System.out.println("ZonedDateTime after "
                           + " subtracting 2 months: "
                           + returnvalue); 
    } 
}

输出：

ZonedDateTime before subtracting months: 2018-10-25T23:12:31.123+02:00[Europe/Paris]
ZonedDateTime after subtracting 2 months: 2018-08-25T23:12:31.123+02:00[Europe/Paris]

参考： https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#minusMonths(long)

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注：本文由纯净天空筛选整理自AmanSingh2210大神的英文原创作品 ZonedDateTime minusMonths() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。