repaint() and revalidate() doesn't work in my JContentPane

[bigjo]

Hi,

I have to make a game (connect4) for school. We have to use the observer-observable pattern in our game. So when I put a chip on the board the model will change and in a update() method the view of my board have to change. The observer-observable pattern is correct, because when I put my boardview in a JDIalog it opens and the new boardview is shown, but in this method I wanted that the viewBoard of my JContentPane is updated, but it isn't.

I tryied with:
jContentPane.revalidate()
and
jContentPane.repaint()

It only work if I put:

viewBoard=null;
jContentPane.add(getBoardGame(indexColPlayChip),BorderLayout.CENTER,1);
jContentPane.revalidate();

But that is not really the way to do, because I always will but my viewBoard to null and recreate a new instance of the object ViewBoard. Normally it is not really the way to go, because the viewBoard is the last version of my board.

more details: viewBoard is created in a new class that extends a JPanel, and it is added to my JContentPane in my JFrame.

[Fubarable]

I'm not sure if you've posted enough information to allow us to be able to answer your question.

[bigjo]

I have a model that extends observable and a view (in swing) that implements observer. When my model change, it call the update() method in my view. But it doesn't repaint it. I tried repaint() and revalidate(), but it doesn't work. If I put in the update() method the "new view" in a JDialog it show me the right new view. So I am sure it is correct. But when I put in the update() that it has to repaint it on the ContentPane, it doesn't work.

So my question why does it repaint itself right in a new JDialog, but not in the ContentPane?

[Fubarable]

Hopefully someone else will be able to help you, but I'm afraid that I don't have even a wild guess based on the information presented, other than that you've got a bug somewhere in code not shown.