How to Use OptionalInt in Java to Write Safer Code

OptionalInt is a container object in Java, introduced in Java 8, that may or may not contain a non-null int value. It is used to represent optional values, reducing the need for null checks and preventing NullPointerExceptions. OptionalInt is a specialized version of Optional for primitive int values, providing improved performance over the generic Optional Integer .

This example demonstrates the basic usage of OptionalInt. We create two OptionalInt instances, one with a value and one empty. We then retrieve the values with default values, perform an action if the OptionalInt contains a value, and display the results.