String[] Encode/Decode

StringUtil.java

public class StringUtil {
    public static String encode (String[] ss) {
        StringBuilder sb = new StringBuilder();
        for (String s : ss) {
            if (sb.length() > 0)
                sb.append(',');
            if (s != null) {
                for (int i = 0; i<s.length(); i++) {
                    char c = s.charAt(i);
                    switch (c) {
                        case '\\':
                        case ',' :
                            sb.append('\\');
                            break;
                    }
                    sb.append(c);
                }
            }
        }
        return sb.toString();
    }
    public static String[] decode (String s) {
        List<String> l = new ArrayList<String>();
        StringBuilder sb = new StringBuilder();
        boolean escaped = false;
        for (int i=0; i<s.length(); i++) {
            char c = s.charAt(i);
            if (!escaped) {
                switch (c) {
                    case '\\':
                        escaped = true;
                        continue;
                    case ',':
                        l.add(sb.toString());
                        sb = new StringBuilder();
                        continue;
                }
            }
            sb.append(c);
            escaped=false;
        }
        l.add(sb.toString());
        return l.toArray(new String[l.size()]);
    }
}