Mobile

public class Mobile {
    public static void main(String[] args) {
        final String mobnum = "9071744430";
        final char[] ds = mobnum.toCharArray();
        System.out.println(ds);

        String res = "";
        for (char i : ds) {
            if (i == '0' || i == '1') {
            } else {
                res += i;
            }
        }
        System.out.println(res);
    }
}