The toString() method help us to get a non-empty string representation of this OptionalDouble.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// OptionalDouble.toString() method import java.util.OptionalDouble; public class GFG { public static void main(String[] args) { // create a OptionalDouble OptionalDouble opDouble = OptionalDouble.of(.3203); // get value using toString String value = opDouble.toString(); // print value System.out.print("Value: " + value); }} |
Output:
Value: OptionalDouble[0.3203]
Program 2:
// Java program to demonstrate// OptionalDouble.toString() methodimport java.util.OptionalDouble; public class GFG { public static void main(String[] args) { // create a empty OptionalDouble OptionalDouble opDouble = OptionalDouble.empty(); // get value using toString String value = opDouble.toString(); // print value System.out.print("Value: " + value); }} |
Output:
Value: OptionalDouble.empty
References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalDouble.html#toString()
