What are some examples of pattern matching in Java?

What are some examples of pattern matching in Java?

In Java, pattern matching is often used with the instanceof operator and switch statements. For example, you can use instanceof to check the type of an object and cast it accordingly.

Can you show me a code example using instanceof?

Sure! Here's a simple example:

if (obj instanceof String) {
    String str = (String) obj;
    System.out.println(str);
}

What about pattern matching with switch statements?

In Java 17 and later, you can use pattern matching in switch statements like this:

switch (obj) {
    case String s -> System.out.println(s);
    case Integer i -> System.out.println(i);
    default -> System.out.println("Unknown type");
}

Are there any limitations to pattern matching in Java?

Yes, pattern matching in Java is still evolving. Some limitations include the need for explicit type checks in certain scenarios and the fact that it's not available in all versions.