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()
