C#

private:
  int myint;

public:
  int myint_get()
  {
    return myint;
  }

  void myint_set(int newval)
  {
    if( do some kind of check to make sure the value is valid )
    {
       myint = newval;
       do any processing that has to happen if myint changes
    }
  }

private int myint;

public int MyInt
{
  get
  {
    return myint;
  }
  set
  {
    if( do some kind of check to make sure the value is valid )
    {
       myint = value;
       do any processing that has to happen if myint changes
    }
  }
}

public override void set_InnerXml(string value)
{
      this.RemoveAllChildren();
      XmlLoader loader1 = new XmlLoader();
      loader1.LoadInnerXmlElement(this, value);
}

You can't 'parse' an existing PDF file using iText, you can only 'read' it page per page.
What does this mean?
The pdf format is just a canvas where text and graphics are placed without any structure information. As such there aren't any 'iText-objects' in a PDF file. In each page there will probably be a number of 'Strings', but you can't reconstruct a phrase or a paragraph using these strings. There are probably a number of lines drawn, but you can't retrieve a Table-object based on these lines. In short: parsing the content of a PDF-file is NOT POSSIBLE with iText. Post your question on the newsgroup news://comp.text.pdf and maybe you will get some answers from people that have built tools that can parse PDF and extract some of its contents, but don't expect tools that will perform a bullet-proof conversion to structured text.

What iText DOES provide is the possibility to READ a PDF document and copy an entire page of this file into the PDF file you are constructing from scratch. This can be useful if you want to create a new document based on (an) existing document(s). You can add a Watermark, pagenumbers,...