OptionalInt getAsInt() method in Java with examples
OptionalInt help us to create an object which may or may not contain a int value. The getAsInt() method returns value If a value is present in OptionalInt object, otherwise throws NoSuchElementException.
Syntax:
public int getAsInt()
Parameters: This method accepts nothing.
Return value: This method returns the value described by this OptionalInt.
Exception: This method throws NoSuchElementException if no value is present
Below programs illustrate getAsInt() method:
Program 1:
// Java program to demonstrate// OptionalInt.getAsInt() method import java.util.OptionalInt; public class GFG { public static void main(String[] args) { // Create an OptionalInt instance OptionalInt opInt = OptionalInt.of(45); System.out.println("OptionalInt: " + opInt.toString()); // Get value in this instance // using getAsInt() System.out.println("Value in OptionalInt = " + opInt.getAsInt()); }} |
Output:
OptionalInt: OptionalInt[45] Value in OptionalInt = 45
Program 2:
// Java program to demonstrate// OptionalInt.getAsInt() method import java.util.OptionalInt; public class GFG { public static void main(String[] args) { try { // Create an OptionalInt instance OptionalInt opInt = OptionalInt.empty(); System.out.println("OptionalInt: " + opInt.toString()); // Get value in this instance // using getAsInt() System.out.println("Value in OptionalInt = " + opInt.getAsInt()); } catch (Exception e) { System.out.println("Exception: " + e); } }} |
Output:
OptionalInt: OptionalInt.empty Exception: java.util.NoSuchElementException: No value present
References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalInt.html#getAsInt()
