OptionalDouble hashCode() method in Java with examples
The hashCode() method help us to get the hash code of the value, if Double value is present, otherwise 0 (zero) if no Double value is present in OptionalDouble object. Syntax:
public int hashCode()
Parameters: This method does not accepts any parameter. Return value: This method returns hash code value of the present value or 0 if no value is present. Below programs illustrate hashCode() method: Program 1:
Java
import java.util.OptionalDouble;
public class GFG {
public static void main(String[] args)
{
OptionalDouble opDouble
= OptionalDouble.of( 253255.432525 );
System.out.println("OptionalDouble: "
+ opDouble.toString());
System.out.println("HashCode value: "
+ opDouble.hashCode());
}
}
|
Output:
OptionalDouble: OptionalDouble[253255.432525]
HashCode value: 885080309
Program 2:
Java
import java.util.OptionalDouble;
public class GFG {
public static void main(String[] args)
{
OptionalDouble opDouble
= OptionalDouble.empty();
System.out.println("OptionalDouble: "
+ opDouble.toString());
System.out.println("HashCode value: "
+ opDouble.hashCode());
}
}
|
Output:
OptionalDouble: OptionalDouble.empty
HashCode value: 0
References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalDouble.html#hashCode()
Last Updated :
27 Dec, 2022
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