public ResultSet query(String ip, String tabela, String user, String haslo, String query){
    	try {
    		Class.forName("com.mysql.jdbc.Driver");
    		System.out.println("jdbc:mysql://" + ip + "/" + tabela + "," + user + "," + haslo);
    		Connection con = DriverManager.getConnection("jdbc:mysql://" + ip + "/" + tabela, user, haslo);
    		Statement stmt = con.createStatement();
    		ResultSet rs = stmt.executeQuery(query);
    		return rs;
    	} catch(Exception e){}
    	return null;
    }