I'm beginner in Java but I has the following code

```
limit = con.prepareStatement("SELECT COUNT(*) FROM San_CadastraDigital WHERE Cliente_Id = ?");

public String Verify(String client) {
    try {
        limit.setString(1, client);
        ResultSet rs = limit.executeQuery();

        while (rs.next()) {
            int limitDigital = rs.getInt(0);            
            if (limitDigital < 3) {
                return "1";
            } else {
                return "0";
            }
        }
    } catch (SQLException e) {
        ui.writeLog(e.getMessage());
        return "0";
    }

    return "0";
}

```

But I got an error that said that column in index 0 is out of the range. 

My query works fine in my database.

How can I get the result of my query ?