net.ucanaccess.jdbc.UcanaccessSQLException: invalid authorization specification - not found:

final static String DBPAD = "src/Attachments/Database SOFO.mdb";
final static String DB = "jdbc:ucanaccess://" +DBPAD;

public void HaalKlantNamen(){
        Connection con;
        Statement s;
        ResultSet rs = null;
        DefaultTableModel table = (DefaultTableModel) NewOrder.table.getModel();

        try {
            con = DriverManager.getConnection( DB ,"","");
            s = con.createStatement();
            rs = s.executeQuery("select * from Item");

            if (rs != null)
                while ( rs.next() ) {
                    String[] product = new String[2];
                    product[0] = rs.getString("ItemSoort");
                    product[1] = rs.getString("Naam");
                    table.addRow(product);
                }
            s.close();
            con.close();
        }
        catch (SQLException e) {
            System.out.println("Error2: " + e);
        }
    }

con = DriverManager.getConnection( DB , "<user>", "<password>");

con = DriverManager.getConnection( DB );