提取括号内的数据，但用分号括起来

Question

Want to extract data inside parenthesis. But if those parenthesis are inside between single quotes. Then it should be neglected. Using regular expression.

Input:

XCA(AA+BB)AA(AD'A(CC)B')

Expected Output:

AA+BB
AD'A(CC)B'

Answer 1

String in="XCA(AA+BB)AA(CC)AD'(CC)'XCA(AA+BB)";
        String result="";
        boolean x=false;
        for (int i = 0; i < in.length(); i++){
        char ch = in.charAt(i);
        String part = String.valueOf(ch);
        int number = 0;
        if (ch == '\'' ) {
            part = "";
            number++;
            for (int j = i + 1; j < in.length(); j++) {
                char d = in.charAt(j);
                if (d == '\'') {
                    number++;
                }
                if (d == '\'') {
                    number--;
                    i = j;
                    if (number == 0) {
                        break;
                    }
                }
                part += d;
            }

        }
        if (ch == '(' ) {
            part = "";
            number++;
            for (int j = i + 1; j < in.length(); j++) {
                char d = in.charAt(j);
                if (d == '(') {
                    number++;
                }
                if (d == ')') {
                    number--;
                    i = j;
                    if (number == 0) {
                        break;
                    }
                }
                part += d;
            }

            System.out.println(part);
        }

        result += part;
    }

Answer 2

\(
    (
        (
            [^\(\)]+|
            '\(|
            \)'
        )+
    )
\)

It consists of three main parts.

1. [^\(\)]+ Anything that is not an parenthesis
2. ' \( an escaped open parenthesis '(
3. \)' an escaped closing parenthesis )'

All enclosed in a matching parenthesis literals then an outer group (group 1) without repetition and an inner group with repetition.

The matches in group 1 are

AA+BB
AD'(CC)'