Java Swing, making a gridlayout fill parent?

Question

I just recently started using Swing to create GUIs for programs, and it's been pretty fun to mess around with so far. However, I'm having an issue with a JPanel with the layout set to gridLayout. Right now it looks like this:

The grid on the right is a JPanel set to a GridLayout, with each cell being a bordered JLabel. The options on the left are also inside a JPanel, and the left JPanel and right JPanel are nested in a GridBagLayout set on a JFrame.

Essentially, my problem is that I want to "scale" the grid on the right so that each cell is a certain height and width. The grid itself will have a variable number of rows and columns, which are set when the program first starts up. Eventually, I plan to have the right JPanel in a JScrollPane (if that's how that works...), so I'm not really concerned about whether or not all of the grid shows up onScreen.

I tried setting the fill value for the gridLayout to "BOTH" and it gave me the following result:

This is closer to my intention, but I wanted the actual ImageIcon in the JLabels to fill the entire JLabel. Additionally, I would want the JLabels to be the same height and width. However, I don't know exactly how to do that. I've been messing around with it for a while now, and I'm not sure if I'm just too much of a noob with Swing, or if I'm missing something in the documentation. In the end, I'd like the grid cells to be a fixed height and width, no matter the number of cells, and no matter whether it goes offscreen or doesn't fill it.

(Also, I just thought, maybe it's not the best idea to code this and then shove it in a JScrollPane later and expect it to perform the same.... I guess I'll just see what happens.)

Answer 1

but I wanted the actual ImageIcon in the JLabels to fill the entire JLabel.

Check out Darryl's Stretch Icon which will allow the icon to resize to file the space available for the JLabel.