MonthDay类的withMonth(int month)方法用于将传递的month用作参数来更改MonthDay对象的month-of-year,然后该方法返回更改后的MonthDay的副本。如果day-of-month对于指定的月份无效,则将调整日期到最后一个有效的day-of-month。此实例是不可变的,不受此方法调用的影响。
用法:
public MonthDay withMonth(int month)
参数:此方法接受月份作为参数,即month-of-year,以将其设置在返回的month-day中,从1月(1月)到12月(12月)。
返回值:此方法返回基于此month-day的MonthDay以及所请求的月份。
异常:如果month-of-year值无效,则此方法引发DateTimeException。
以下示例程序旨在说明withMonth()方法:
示例1:
// Java program to demonstrate
// MonthDay.withMonth() method
import java.time.*;
import java.time.temporal.*;
public class GFG {
public static void main(String[] args)
{
// create a MonthDay object
MonthDay monthday
= MonthDay.of(8, 28);
// print instance
System.out.println("MonthDay before"
+ " applying method: "
+ monthday);
// apply withMonth method of MonthDay class
MonthDay updatedlocal = monthday.withMonth(1);
// print instance
System.out.println("MonthDay after"
+ " applying method: "
+ updatedlocal);
}
}
输出:
MonthDay before applying method: --08-28 MonthDay after applying method: --01-28
示例2:
// Java program to demonstrate
// MonthDay.withMonth() method
import java.time.*;
import java.time.temporal.*;
public class GFG {
public static void main(String[] args)
{
// create a MonthDay object
MonthDay monthday
= MonthDay.of(10, 31);
// print instance
System.out.println("MonthDay before"
+ " applying method: "
+ monthday);
// apply withMonth method of MonthDay class
MonthDay updatedlocal = monthday.withMonth(5);
// print instance
System.out.println("MonthDay after"
+ " applying method: "
+ updatedlocal);
}
}
输出:
MonthDay before applying method: --10-31 MonthDay after applying method: --05-31
参考文献: https://docs.oracle.com/javase/10/docs/api/java/time/MonthDay.html#withMonth(int)
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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 MonthDay withMonth() 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。