Java中的 MonthDay adjustInto() 方法及示例

MonthDay类的adjustInto()方法用于调整传递的时间对象，使其具有应用此方法的MonthYear。此实例是不可变的，不受此方法调用的影响。

句法：

public Temporal adjustInto(Temporal temporal)

参数：此方法接受时间作为参数，这是要调整的目标时间对象。它不应该为空。

返回值：该方法返回调整后的对象。

异常：此方法抛出以下异常：

• DateTimeException – 如果无法进行调整。
• ArithmeticException – 如果无法进行调整。

下面的程序说明了 adjustInto() 方法：
方案一：

// Java program to demonstrate
// MonthDay.adjustInto() method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create a MonthDay object
        MonthDay mday = MonthDay.of(10, 31);
  
        // print instance
        System.out.println("MonthDay :"
                           + mday);
  
        // create a temporal object
        LocalDate date
 = LocalDate.parse("2007-12-03");
  
        // print instance
        System.out.println("LocalDate :"
                           + date);
  
        // apply adjustInto method of Year class
        LocalDate updatedlocal
 = (LocalDate)mday.adjustInto(date);
  
        // print instance
        System.out.println("LocalDate after"
                           + " applying adjustInto method: "
                           + updatedlocal);
    }
}

输出：

MonthDay :--10-31
LocalDate :2007-12-03
LocalDate after applying adjustInto method: 2007-10-31

方案二：

// Java program to demonstrate
// MonthDay.adjustInto() method
  
import java.time.*;
import java.time.temporal.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create a MonthDay object
        MonthDay mday = MonthDay.of(12, 22);
  
        // print instance
        System.out.println("MonthDay :"
                           + mday);
  
        // create a temporal object
        LocalDate date
 = LocalDate.parse("2017-12-03");
  
        // print instance
        System.out.println("LocalDate :"
                           + date);
  
        // apply adjustInto method of Year class
        LocalDate updatedlocal 
= (LocalDate)mday.adjustInto(date);
  
        // print instance
        System.out.println("LocalDate after"
                           + " applying adjustInto method: "
                           + updatedlocal);
    }
}

输出：

MonthDay :--12-22
LocalDate :2017-12-03
LocalDate after applying adjustInto method: 2017-12-22

参考文献： https: Java Java.time.temporal.Temporal)