Java中的 MonthDay with() 方法及示例

MonthDay类的with(Month month)方法用于更改 MonthDay 对象的月份，使用作为参数传递的月份，在该方法之后返回更改后的 MonthDay 的副本。如果月份的日期值对更改操作后的指定月份，日期将调整为最后一个有效日期。

句法：

public MonthDay with(Month month)

参数：此方法接受月份作为参数，该参数是要在返回的月日中设置的月份。

返回值：此方法根据请求月份的本月-日返回一个 MonthDay

下面的程序说明了 with() 方法：
方案一：

// 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);
    }
}

输出：

MonthDay before applying method: --08-28
MonthDay after applying method: --10-28

方案二：

// 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);
    }
}

输出：

MonthDay before applying method: --10-31
MonthDay after applying method: --02-29

参考资料： https: Java Java.time.Month)