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()
