Resizing JPanel within JScrollPane

[McMatt]

Hello,

how can the size of a JPanel automatically be calculated?

The panel which is scrollable in the scrollpane has always the height
which I set with setPreferredSize(Dimension). If the components on
that panel need less place it should be smaller so that the scroll
bars can disappear if not necessary. And if the components on that
panel need more space it should be larger so that one can see all of
the stuff when scrolling down.

I hope the description is exact enough.

Thanks for any help in advance.

Matthias

 

[Andrew Thompson]

how can the size of a JPanel automatically be calculated?

Try..
panel.validate();
// then do nothing with preferred size..

...if that fails to do what's needed, I
suggest you prepare an SSCCE of the code.
<http://www.physci.org/codes/sscce>

Andrew T.

 

[McMatt]

Hello,

thanks for the quick reply. During the preparation of a SSCCE it
turned out that more elements are involved in it than expected.

The main reason was a layout in on of the components.

But I needed still a validate() call - namely scrollPane.validate().

Thanks for your help,
Kind regards,

Matthias