Regarding JList- Combobox Swing

I have Combobox.
In which i will select the value.
after selecting the value I will Show the Jlist.

I have written this code.
but JList doesnt show up.
Vector<String> c = new Vector<String>();
list1= new JList();
list1.setListData(c);
list1.setVisible(true);
list1.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
list1.setLayoutOrientation(JList.HORIZONTAL_WRAP);
list1.setVisibleRowCount(-1);

listsc = new JScrollPane(list1);
listsc.setPreferredSize(new Dimension(100,100));
listsc.setAlignmentX(LEFT_ALIGNMENT);

add(listsc,BorderLayout.EAST);

Can you help me why JList doesnt display.
dp = new DefaultListModel();

add(listsc,BorderLayout.EAST);

you can't just add a component to a visible container and expect it to appear

you need to
validate() for parents that are awt
revalidate() for parents that are swing

and often, also required is
repaint()

Cross post
http://forums.sun.com/thread.jspa?threadID=5432773

Please BeForthrightWhenCrossPostingToOtherSites.

I deleted post of other forum

> I deleted post of other forum

you haven't, so it seems like the final line of reply #3 in the 'other forum' is 100% accurate