月日用 Java 中的 DayOfMonth()方法举例
原文:https://www . geesforgeks . org/month day-with dayofmonth-in-Java-method-with-examples/
with DayOfMonth(int dayOfMonth)方法的 MonthDay 类用于使用作为参数传递的 dayOfMonth 来更改 MonthDay 对象的月日，然后该方法返回更改后的 MonthDay 的副本。如果在更改操作后，月中某一天的值对于指定月份无效，则会引发异常。
语法:
public MonthDay withDayOfMonth(int dayOfMonth)
参数:此方法接受日作为参数，该参数是返回月日中要设置的月日，从 1 到 31。
返回值:该方法返回基于该月日的月日和请求日。
异常:如果月日值无效，或者月日对于该月无效，该方法抛出日期时间异常。
以下程序说明了 withDayOfMonth()方法: 程序 1:
// Java program to demonstrate
// MonthDay.withDayOfMonth() 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 withDayOfMonth method
// of MonthDay class
MonthDay updatedlocal
= monthday.withDayOfMonth(21);
// print instance
System.out.println("MonthDay after"
+ " applying method: "
+ updatedlocal);
}
}
Output:
MonthDay before applying method: --08-28
MonthDay after applying method: --08-21
程序 2:
// Java program to demonstrate
// MonthDay.withDayOfMonth() 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 withDayOfMonth method
// of MonthDay class
MonthDay updatedlocal
= monthday.withDayOfMonth(12);
// print instance
System.out.println("MonthDay after"
+ " applying method: "
+ updatedlocal);
}
}
Output:
MonthDay before applying method: --10-31
MonthDay after applying method: --10-12
参考文献:T2【https://docs . Oracle . com/javase/10/docs/API/Java/time/monthday . html # withDayOfMonth(int)
版权属于：月萌API www.moonapi.com，转载请注明出处
