Pattern matching is an excellent feature that was introduced in C# 7. You can use pattern matching on any data type, even on custom data types, and use it to extract values from an expression.

Regular expressions are built into many programming languages and used to match, search, and transform patterns of text in your programs. Get started with Regex.

Java SE 14 (March 2020) introduced a limited form of pattern matching as a preview feature, which becomes a permanent feature in Java SE 16 (March 2021).