The isFixed() method of ValueRange class is used to check the value range is fixed and fully known or not.For example, the ChronoField day-of-month runs from 1 to between 28 and 31. The maximum value of day-of-month is not fixed, there is uncertainty about it. However, for the month of December, the range is always 1 to 31, thus it is fixed.
Syntax:
public boolean isFixed()
Parameters: This method accepts nothing.
Return value: This method returns true if the set of values is fixed.
Below programs illustrate the ValueRange.isFixed() method:
Program 1:
// Java program to demonstrate// ValueRange.isFixed() method  import java.time.LocalDateTime;import java.time.temporal.ChronoField;import java.time.temporal.ValueRange;  public class GFG {    public static void main(String[] args)    {          // create LocalDateTime        LocalDateTime l1            = LocalDateTime                  .parse("2018-12-06T19:21:12");          // Get ValueRange object        ValueRange vR            = l1.range(ChronoField.DAY_OF_MONTH);          // apply isFixed()        boolean response = vR.isFixed();          // print results        System.out.println("isFixed: "                           + response);    }} |
Output:
isFixed: true
Program 2:
// Java program to demonstrate// ValueRange.isFixed() method  import java.time.temporal.ValueRange;  public class GFG {    public static void main(String[] args)    {          // create ValueRange object        ValueRange vRange = ValueRange.of(1111, 66666);          // apply isFixed()        boolean response = vRange.isFixed();          // print results        System.out.println("isFixed: "                           + response);    }} |
Output:
isFixed: true
References: https://docs.oracle.com/javase/10/docs/api/java/time/temporal/ValueRange.html#isFixed()
