GroupLayout-like library for iText

Question

Hi. I was wondering whether there is a library that would provide javax.swing.GroupLayout-like ability to lay-out things (e.g. text boxes)? Or Maybe PDF itself supports such layouts?

Some GroupLayout links: http://java.sun.com/docs/books/tutorial/uiswing/layout/group.html http://java.sun.com/javase/6/docs/api/javax/swing/GroupLayout.html