Java Regular Expression for detecting class/interface/etc declaration

Question

I\'m trying to create a regular expression that detect a new class for example:

public interface IGame {

or

private class Game         


        

Answer 1

Change your regex like below to match both type of string formats.

line.matches("(?:public|protected|private|static)\\s+(?:class|interface)\\s+\\w+\\s*\\{");

Example:

String s1 = "public interface IGame {";
String s2 = "private class Game {";
System.out.println(s1.matches("(?:public|protected|private|static)\\s+(?:class|interface)\\s+\\w+\\s*\\{"));
System.out.println(s2.matches("(?:public|protected|private|static)\\s+(?:class|interface)\\s+\\w+\\s*\\{"));

Output:

true
true