Layout Problem in a JScrollPane

Question

Hi Friends. I have the following problem.
Fact 1:
When I add components to a JPanel with a FlowLayout, the components rearrange themself to the next line when the length exceeds the viewable area(horizontally).
Goal:
I want to add the JPanel to a scrollPane and I dont want the horizontal scrolling. I want that when I add the components to the JPanel, components are added to the new line, when the horizontal viewable area is used up.(Something like the "fact" mentioned above ... but the difference here is, I want the JPanel inside a JScrollPane)
Problem :
When i add the JPanel to the scrollPane and adds components to JPanel... all components come into one line and don't wraps up themself.
I have also tried with various properties.. telling no horizontal scrollbar etc... but it doesnt helps..... the components are laid off in one single long line.
Please help me with this problem.
Thanks a lot in advance.
Warm Regards,
Nishant

Answer 1

hi friends,
yeah now after a lot of RnD , I am able to implement a solution to the problem... it might not be a good one, but for me it is decent enuf.
I tried everything , extending a custom JPanel from Scrollable and all sorts of things, but nothing was very helpful.
One single thing which is most important is the preferredSize of the JPanel, which if you can set properly with the addition/deletion or resizing ,..... the problem is solved.
so the problem remains only to set the appropiate preferredSize of the Jpanel. unfortunately, the JPanel's respective preferredSize, maximumSize, minimumSize etc are not of much help.
so I decided to look for the components inside the JPanel and look for the last component position and the height.... but unfortunately (I dont know the reason), I get the position of all components, except the last one correct. So my choice of component now is last but one. I calculated the position of last but one component and added the (height of this component + height of last component + some buffer ), to get the height of the panel.
and set the preferredSize of the Jpanel appropiately, for ex. in the action, adding components to the panel.. etc .. etc...
the code snippet is as follows..and it works absolutely fantastic for my requirements, atleast...
Component[] tmpC = _oLeftPanel.getComponents();
if(tmpC.length >1)
     double kbuffer = 25D;
     //doing for last but one comp.
     Component kcomp1 = tmpC[tmpC.length - 2];
     double kh1 = kcomp1.getY();
     kh1 += kcomp1.getHeight();
     kh1 += kbuffer;
     //doing it for the last component
     kcomp1 = tmpC[tmpC.length - 1];
     kh1 += kcomp1.getHeight();
     kh1 += kbuffer;
     Dimension kdim = new Dimension((int)_oLeftScrollPane.getViewport().getViewSize().getWidth(), (int)kh1);
     _oLeftPanel.setPreferredSize(kdim);