CSV line spliter

CSV.java

import java.util.ArrayList;
import java.util.List;

public class CSV {
    public static String[] splitLine(String line) {
        List<String> partsList = new ArrayList<>();
        char[] chars = line.toCharArray();
        boolean inQuotes = false;
        StringBuilder currentPart = new StringBuilder();
        int idx = 0;
        while (true) {
            if (idx >= chars.length) {
                partsList.add(currentPart.toString());
                break;
            }
            char c = chars[idx];
            if (c == ',' && !inQuotes) {
                partsList.add(currentPart.toString());
                currentPart = new StringBuilder();
            } else if (c == '"') {
                if (inQuotes) {
                    if (idx + 1 < chars.length && chars[idx + 1] == '"') {
                        currentPart.append('"');
                        idx++;
                    } else {
                        inQuotes = false;
                    }
                } else {
                    inQuotes = true;
                }
            } else {
                currentPart.append(c);
            }
            idx++;
        }
        return partsList.toArray(new String[0]);
    }
}