java.sql.SQLException: Column 'nombreGarcia' not found. why?

Question

I cant connect my db with my java aplication and I really dont know whts wrong with it, comeone cant help me, please

 try {
        
        Connection miconexion = DriverManager.getConnection("jdbc:mysql://localhost:3306/concesionario","root","password");
        
        // 2.PASO CREAR PASO STAMENT.
        
        Statement miStatement = miconexion.createStatement();
        
        
        //3.PASO EJECUTAR MY SQL.
        
        ResultSet miresulset = miStatement.executeQuery("SELECT * FROM CLIENTES");
        
        //4.PASO RECORRER EL RESULSET
        
        while(miresulset.next()) {
            
            System.out.println(miresulset.getString("dni" + miresulset.getString("nombre" + "" + miresulset.getString("apellido"))));
            
        }
        
    }catch(Exception e) {
        
        System.out.println("NO CONECTA");
        e.printStackTrace();
        
    }
        
        

Answer 1

This line

System.out.println(miresulset.getString("dni" + miresulset.getString("nombre" + "" + miresulset.getString("apellido"))));

adds whatever is found as apellido to "nombre". The value happens to be "Garcia", hence the String of nombreGarcia in the error. This is as far as I can go with helping you without further information from your part.