static or nonstatic inner classes

[Sigmar Muuga]

Hello,
while designing pages for my app, I was thinking, if there is some
difference, when I use static or nonstatic classes in my page classes?

For example:

public class MyPage extends Page {

  //// some code
  private /** Should it be static or not? */ class MyForm extends Form {
  }
}

Best regards,
Sigmar