Java MonthDay isBefore()方法及示例

MonthDay 类的 isBefore() 方法用于检查这个MonthDay是否在作为参数传递的MonthDay之前。该方法返回一个布尔值，显示相同的内容。

语法

public boolean isBefore(MonthDay other)

参数： 该方法接受一个参数 ， 即另一个要比较的月日。

返回值： 如果这个月日在指定的月日之前，该方法返回真，否则返回假。

以下程序说明了isBefore()方法：

程序1 :

// Java program to demonstrate
// MonthDay.isBefore() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create a MonthDay object
        MonthDay month = MonthDay.parse("--10-12");
  
        // create other MonthDay object
        MonthDay othermonth = MonthDay.parse("--11-12");
  
        // apply isBefore() method
        boolean value = month.isBefore(othermonth);
  
        // print instance
        System.out.println("monthday:"
                           + month + " is before monthday:"
                           + othermonth + " = "
                           + value);
    }
}

输出。

monthday:--10-12 is before monthday:--11-12 = true

程序2

// Java program to demonstrate
// MonthDay.isBefore() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
        // create a MonthDay object
        MonthDay month = MonthDay.parse("--10-12");
  
        // create other MonthDay object
        MonthDay othermonth = MonthDay.parse("--09-12");
  
        // apply isBefore() method
        boolean value = month.isBefore(othermonth);
  
        // print instance
        System.out.println("monthday:"
                           + month + " is before monthday:"
                           + othermonth + " = "
                           + value);
    }
}

输出。

monthday:--10-12 is before monthday:--09-12 = false

**参考资料: ** https://docs.oracle.com/javase/10/docs/api/java/time/MonthDay.html#isBefore(java.time.MonthDay)