The Optional Class
Explore how to use Java's Optional class to handle nullable values safely and avoid null pointer exceptions. Understand creating, unwrapping, and processing Optional instances to write cleaner, more functional code that eliminates common null-related errors.
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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.
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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 initialize Optional instances ...