I put JTree, JTable & JPanel with some draws, every on each jScrollBar and
all that in two JSplitPane so I have two removable grid and tree different
horizontal
scroll bar.

1. And now I want one vertical scrollbar for all tree components
2. question: in JPanel with the graphicsvI draw some gantt which has
changeable
   size but JScrollPanel shows only the initial size.
  I try to setPreferredSize(x,y,width,height) but how to change width &
height?