OptionalLong toString() method in Java with examples

The toString() method help us to get a non-empty string representation of this OptionalLong.This non-empty string representation is suitable for debugging. The exact presentation format is unspecified and may vary between implementations and versions.

Syntax:

public String toString()

Parameters: This method accepts nothing.

Return value: This method returns the string representation of this instance.

Below programs illustrate toString() method:
Program 1:

// Java program to demonstrate
// OptionalLong.toString() method

import java.util.OptionalLong;

public class GFG {

    public static void main(String[] args)
    {

        // create a OptionalLong
        OptionalLong opLong
            = OptionalLong.of(21342536475643L);

        // get value using toString
        String value = opLong.toString();

        // print value
        System.out.print("Value: " + value);
    }
}

Output:

Value: OptionalLong[21342536475643]

Program 2:

// Java program to demonstrate
// OptionalLong.toString() method

import java.util.OptionalLong;

public class GFG {

    public static void main(String[] args)
    {

        // create a empty OptionalLong
        OptionalLong opLong
            = OptionalLong.empty();

        // get value using toString
        String value = opLong.toString();

        // print value
        System.out.print("Value: " + value);
    }
}

Output:

Value: OptionalLong.empty

References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalLong.html#toString()