OptionalInt orElseGet() method in Java with examples

The orElseGet(java.util.function.IntSupplier) method helps us to get the value in this OptionalInt object. If a value is not present in this OptionalInt, then this method returns the result produced by the supplying function, passed as the parameter Syntax:

public int orElseGet(IntSupplier supplier)

Parameters: This method accepts the supplying function that produces a value to be returned. Return value: This method returns the int value, if present, otherwise the result produced by the supplying function. Exception: This method throw NullPointerException if no value is present and the supplying function is null. Below programs illustrate orElseGet(java.util.function.IntSupplier) method: Program 1: Program 2:

References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalInt.html#orElseGet(java.util.function.IntSupplier)