OptionalLong hashCode() method in Java with examples
Last Updated :
27 Dec, 2022
The hashCode() method help us to get the hash code of the value, if Long value is present, otherwise 0 (zero) if no Long value is present in OptionalLong 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.OptionalLong;
public class GFG {
public static void main(String[] args)
{
OptionalLong opLong
= OptionalLong.of( 253255 );
System.out.println("OptionalLong: "
+ opLong.toString());
System.out.println("HashCode value: "
+ opLong.hashCode());
}
}
|
Output:
OptionalLong: OptionalLong[253255]
HashCode value: 253255
Program 2:
Java
import java.util.OptionalLong;
public class GFG {
public static void main(String[] args)
{
OptionalLong opLong
= OptionalLong.empty();
System.out.println("OptionalLong: "
+ opLong.toString());
System.out.println("HashCode value: "
+ opLong.hashCode());
}
}
|
Output:
OptionalLong: OptionalLong.empty
HashCode value: 0
References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalLong.html#hashCode()
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