What are the differences between Java pattern matching and regular expressions?
Java pattern matching is a feature introduced in Java 16 that allows for more concise and readable code, while regular expressions are a traditional way to match patterns in strings using a specific syntax.
Can you give me an example of how to use pattern matching in Java?
Sure! Here's a simple example:
if (obj instanceof String s) {
System.out.println(s.length());
}
This checks if obj
is a String and assigns it to s
if true.
How does performance compare between the two?
Pattern matching can be more efficient in certain cases because it avoids the overhead of compiling a regex pattern, especially for simple type checks.
Are there any limitations to using pattern matching?
Yes, pattern matching is limited to certain types and structures, and it may not cover all use cases that regular expressions can handle.
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