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Java ZonedDateTime plusMonths()用法及代码示例


ZonedDateTime类的plusMonths()方法用于在此ZonedDateTime中添加月份数,并在添加后返回ZonedDateTime的副本。此方法在本地时间轴上操作,将月份添加到本地日期时间,并在添加月份后添加本地日期使用区域ID获取偏移量,将时间转换回ZonedDateTime。当转换回ZonedDateTime时,如果本地日期时间重叠,则将尽可能保留偏移量,否则将使用较早的偏移量。此实例是不可变的,不受此方法调用的影响。

用法:

public ZonedDateTime plusMonths(long months)

参数:此方法接受单个参数months,它代表要添加的月份,可以为负数。


返回值:此方法基于添加了月份的日期时间返回ZonedDateTime。

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plusMonths()方法:
示例1:

// Java program to demonstrate 
// ZonedDateTime.plusMonths() 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"
                           + " adding months: "
                           + zoneddatetime); 
  
        // add 3 months 
        ZonedDateTime returnvalue 
            = zoneddatetime.plusMonths(3); 
  
        // print result 
        System.out.println("ZonedDateTime after "
                           + " adding months: "
                           + returnvalue); 
    } 
}
输出:
ZonedDateTime before adding months: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
ZonedDateTime after  adding months: 2019-03-06T19:21:12.123+05:30[Asia/Calcutta]

示例2:

// Java program to demonstrate 
// ZonedDateTime.plusMonths() 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"
                           + " adding months: "
                           + zoneddatetime); 
  
        // add 20 months 
        ZonedDateTime returnvalue 
            = zoneddatetime.plusMonths(20); 
  
        // print result 
        System.out.println("ZonedDateTime after "
                           + " adding months: "
                           + returnvalue); 
    } 
}
输出:

ZonedDateTime before adding months: 2018-10-25T23:12:31.123+02:00[Europe/Paris]
ZonedDateTime after adding months: 2020-06-25T23:12:31.123+02:00[Europe/Paris]

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