Java 中带()方法的月日，示例
原文:https://www . geesforgeks . org/monthday-with-method-in-Java-with-examples/
使用 MonthDay 类的(月月)方法，该方法使用作为参数传递的月来更改 MonthDay 对象的年中月，然后该方法返回更改后的 MonthDay 的副本。如果更改操作后指定月份的月日值无效，则该日期将被调整为最后一个有效的月日。
语法:
public MonthDay with(Month month)
参数:该方法接受月作为参数，该参数是返回的月日中要设置的月份。
返回值:此方法返回一个月日，该月日基于请求的月份
下面的程序说明了用()方法: 程序 1:
// Java program to demonstrate
// MonthDay.with() 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 with method of MonthDay class
MonthDay updatedlocal
= monthday.with(Month.OCTOBER);
// print instance
System.out.println("MonthDay after"
+ " applying method: "
+ updatedlocal);
}
}
Output:
MonthDay before applying method: --08-28
MonthDay after applying method: --10-28
程序 2:
// Java program to demonstrate
// MonthDay.with() 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 with method of MonthDay class
MonthDay updatedlocal
= monthday.with(Month.FEBRUARY);
// print instance
System.out.println("MonthDay after"
+ " applying method: "
+ updatedlocal);
}
}
Output:
MonthDay before applying method: --10-31
MonthDay after applying method: --02-29
参考文献:https://docs . Oracle . com/javase/10/docs/API/Java/time/monthday . html # with(Java . time . month)
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