Pattern Matching
Pattern matching reduces repetitive type checks and casts.
if (value instanceof String text && !text.isBlank()) {
System.out.println(text.trim());
}
Modern Java also extends pattern matching to switch in supported releases, making handling of sealed hierarchies more concise.
Use pattern matching to clarify domain logic rather than replacing good object design with large type-dispatch blocks.
Key Takeaways
- Pattern variables eliminate many explicit casts.
- Pattern matching works well with sealed hierarchies.
- Use it to clarify domain logic.