The Optional Class
Explore how to use the Java Optional class to handle potential null values safely and cleanly. This lesson helps you understand creating, unwrapping, and processing Optionals to avoid null-related errors and promote functional programming patterns in Java applications.
We'll cover the following...
Null references are a common source of runtime errors in Java applications. Unchecked null values can pass through multiple method calls before causing a NullPointerException when dereferenced. The Optional class explicitly represents a value that may be absent.
Let’s examine how to use Optional effectively in modern Java applications and technical interviews:
What is the Optional class and what problem does it solve?
How do we create an Optional instance?
Let’s look at a code snippet demonstrating how to ...