Using regex for switch-statement in Java

Question

void menu() {
    print();
    Scanner input = new Scanner( System.in );
    while(true) {
        String s = input.next();
        switch (s) {
        case \"m\":          


        

Answer 1

You can't use a regex as a switch case. (Think about it: how would Java know whether you wanted to match the string "[A-Z]{1}[a-z]{2}\\d{1,}" or the regex?)

What you could do, in this case, is try to match the regex in your default case.

    switch (s) {
        case "m": print(); continue;
        case "s": stat(); break;
        case "q": return;
        default:
            if (s.matches("[A-Z]{1}[a-z]{2}\\d{1,}")) {
                filminfo( s );
            }
            break;
    }

(BTW, this will only work with Java 7 and later. There's no switching on strings prior to that.)