Create Delphi Object in Form

I have a Delphi form that doesn't have a component. Then I create a block with multiple classes. I tried to instantiate the class and create an object on the form, but it complains that the class is not declared. here is the error message: "E2003 Undeclared Identifier: TUser".

Here's the project:

;

uses
  Forms,
  Home in 'Home.pas' {Form1},
  uUser in 'uUser.pas';

{$R *.res}

begin
  ReportMemoryLeaksOnShutdown := DebugHook <> 0;
  Application.Initialize;
  Application.Run;
end.

      

        
        
        
      

    

Here is my empty form:

unit Home;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, uUser;

type
  TForm1 = class(TForm)
  private
    { Private declarations }
protected

  public
    { Public declarations }
   u : TUser; //It complaining about TUser. I can right click on 
   TUser, and it will take me to the class declaration. 

  end;
var
  Form1: TForm1;

implementation
{$R *.dfm}

end.

      

        
        
        
      

    

Here is the class I created:

unit uUser;

interface

uses
  classes,SysUtils,Dialogs;

implementation

type
TAddress = class
private
 FStreetAddress : string;
 FCity          : string ;
 FState         : string;
 FZipCode       : string;

 procedure setStreetAddress(const Value : string);
 procedure setCity(const Value : string);
 procedure setState(const Value : string);
 procedure setZipCode(const Value : string);

 protected

 public
 property StreetAddress : string read FStreetAddress write setStreetAddress;
 property City : string read FCity write setCity;
 property State : string read FState write setState;
 property ZipCode : string read FZipCode write setZipCode;


end;

type
  TPermanentAdddress = class (TAddress)
  private
  FStartDate     : string;
  FEndDate       : string;

  procedure setStartDate(const Value : string);
  procedure setEndDate(const Value : string);

  protected

  public

  property StartDate : string read FStartDate write setStartDate;
  property EndDate   : string read FEndDate write setEndDate ;
  end;


type
TUser = class(TComponent)
  private
  FFirstName : string;
  FAddress : TPermanentAdddress;
  procedure setFirstName(const Value : string);
  procedure setAddress(const Value : TPermanentAdddress);

  protected

  public
  constructor Create(); reintroduce; overload;
  destructor Destroy();  override;
   property FirstName : string read FFirstName write setFirstName;
   property Address : TPermanentAdddress read FAddress write setAddress;

end;

procedure TAddress.setStreetAddress(const Value : string);
begin
  FStreetAddress := value;
end;

 procedure TAddress.setCity(const Value : string);
 begin
   FCity := Value;
 end;
 procedure TAddress.setState(const Value : string);
 begin
   FState := Value;
 end;
 procedure TAddress.setZipCode(const Value : string);
 begin
   FZipCode := Value;
 end;

 //Permanent Address
  procedure TPermanentAdddress.setStartDate(const Value : string);
  begin
    FStartDate := value;
  end;
  procedure TPermanentAdddress.setEndDate(const Value : string);
  begin
    FEndDate := Value;
  end;

  //tvxpatient
  procedure TUser.setFirstName(const Value : string);
  begin
    FFirstName := Value;
  end;
  procedure TUser.setAddress(const Value : TPermanentAdddress);
  begin
    FAddress := Value;
  end;

  constructor TUser.Create();
  begin
   FAddress := TPermanentAdddress.Create;
  end;

  destructor TUser.Destroy();
  begin
  //FAddress.Free;
  end;

end.