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Accepted
Lucas. D
Asked: 2020-08-24 13:15:13 +0800 CST 2020-08-24 13:15:13 +0800 CST

Load a JList with data from an array

  • 772

Hello, I have my class Gestorwith the following code:

Class gestor 
{

        private final String cadena = "jdbc:sqlserver://localhost:1433;databaseName=Persona";
        public final String usuario = "mi_usuario";
        public final String contrasenia = "mi_contraseña";


        ArrayList<Persona> cargarPersonas()
        {
            ArrayList<Persona> personas = new ArrayList<>();

            try
            {
                Connection cn = DriverManager.getConnection(cadena, usuario, contrasenia);
                Statement st = cn.createStatement();
                ResultSet rs = st.executeQuery("SELECT * FROM Personas");

                while (rs.next())
                {
                    String nombre = rs.getString("nombre");
                    String apellido = rs.getString("apellido");
                    int edad = rs.getInt("edad");

                    Persona p = new Persona(nombre,apellido,edad);
                    personas.add(p);
                }

                rs.close();
                st.close();
                cn.close();

            }catch (SQLException e)
            {
                System.out.println("ERROR : " + e);
            }

            return personas;
        }

}

I have a JFramecall ListadoPersonaswith a JListcall lstPersonas. I would like to be able to load it with the data from the ArrayList.

java

1 Answers

  1. Best Answer

    I'm not familiar with the ArrayList... But if these work the same as an array/vector/array/matrix you could use a forto fill the list like this:

        //Debes crear un DefaultListModel
    DefaultListModel lista = new DefaultListModel();
    Jlist.setModel(lista);

    String[] vector = new String[6]; //Por ejemplo (Solo agrego esto para que veas que es un vector)

    for(int i = 0;i < vector.length;i++) {
        lista.addElement(vector[i]);
    }

    If ArrayListit works the same as vectors you just have to adapt this example

    • 1