Java Pattern Matching — Free Java Tutorial
Learn Java Pattern Matching in Java with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Java Pattern Matching in Java with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Java Pattern Matching in Java
Java 16 introduced pattern matching for instanceof. Instead of: if (obj instanceof String) { String s = (String) obj; ... } you write: if (obj instanceof String s) { ... }
The pattern variable s is automatically cast and scoped to the block where the condition is true. This eliminates the explicit cast.
Java 21 introduced sealed classes (classes that restrict which classes can extend them) and pattern matching in switch — powerful for exhaustive type handling.
Pattern matching makes polymorphic type dispatch cleaner and safer — the compiler ensures all cases are handled.
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