JLayeredPane problem: How to remove object added at specific depth in

Question

JLayeredPane?
For instance, I have a class called BlobEvolution. In that class, I have an array of JLayeredPanes squrares[row][col][depth]. I add an object Blob, to a new LayeredPane cell, using the statement LayeredPane cell=new LayeredPaine();
cell.add(Blob, new Integer(2));, then I add the cell to a contentPane using contentPane.add(cell). I set squares[row][col][0] to point to cell, and squares[row][col][2] refers to the blob object in the cell.
but now I want to remove a certain layer from the cell and repaint that cell to display only the deeper contents of the cell. Or I want to remove the blob in the cell, which is always at depth 2 in the cell. How would I do that? And how do I repaint only that cell?

Answer 1

By the way, both objects that I add to the layeredpanes extend JLayeredPanes.
I actually tried to do this remove call: squares[row][col][0].remove(2);
I was trying to point to the cell layeredpane that contains the two objects, blob, and plankton. blob was placed at depth 2, so I tried to remove the depth 2 component. but I get an ArrayIndexOutofBounds Exception and it says no such child:2. java.awt.Container.getComponent(Container.java:237)
javax.swing.JLayeredPane.remove(JLayeredPane.java:216)
BlobEvolution.removeblob(BlobEvolutioin.java:133)
That's essentially the error message I get in the console. Obviously, it's the remove statement above that's giving me the problem, but I don't know what's wrong with it and how to fix it.
Please, if anyone can help I'd really appreciate it.