Java Question How does my Java class to be built, if I have a list as a member?

Dim Mail As Email
[B]Mail.To.Add("user@example.com") <---< I do not get back this functionality[/B]

public static class Email {
      public String Subject = "";
      public String Body = "";
      public anywheresoftware.b4a.objects.collections.List To = new anywheresoftware.b4a.objects.collections.List();
      public anywheresoftware.b4a.objects.collections.List CC = new anywheresoftware.b4a.objects.collections.List();
      public anywheresoftware.b4a.objects.collections.List BCC = new anywheresoftware.b4a.objects.collections.List();
      public anywheresoftware.b4a.objects.collections.List Attachments = new anywheresoftware.b4a.objects.collections.List();
      public Email() {
         To.Initialize();
         CC.Initialize();
         BCC.Initialize();
         Attachments.Initialize();
      }