Java 21 Unnamed Patterns and Variables (with Examples)

Date: 2024-01-19

Java 21 introduces unnamed patterns and variables (JEP-443), using underscores (_) to simplify code by ignoring irrelevant data in objects. This feature, currently in preview, improves readability by allowing developers to extract only necessary information, particularly useful when working with complex objects and record pattern matching. It's similar to features in Python and Go, enhancing conciseness in assignments, exception handling (catch blocks), try-with-resources, and lambda expressions. Unnamed patterns streamline record deconstruction by allowing the omission of unnecessary fields. This leads to cleaner, more focused code.

Read more: https://examples.javacodegeeks.com/java-21-unnamed-patterns-and-variables/