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javaswinguser-interfacelayoutjbutton

Make buttons unresizable

So I was trying to google how to set a default size to JButtons so that they don't grow as the JFrame is resized. I didn't see a setDefaultSize method but the closest one I could find that does a similar job is setMaximumSize(). However, it doesn't seem to work in my situation and I'm guessing it's because I'm using Grid Layout for positioning my buttons in the frame, here's a small piece of my code: 

rightPanel.add(ButtonA);
rightPanel.add(ButtonB);
rightPanel.add(ButtonC);

outerPanel.add(leftPanel);
outerPanel.add(rightPanel);
getContentPane().add(outerPanel);

Here's a picture of what happens:

enter image description here

I would also like to have my buttons in the middle of the right panel when I'm resizing (just like they are now but a lot smaller). Any idea of how I can fix this? I'm assuming that I have to use another layout or something.

Thanks

EDIT: I modified my code to use BoxLayout but it does not seem to put the buttons in the middle. The X Alignment is working but Y Alignment is not doing anything:

ButtonA.setAlignmentX(CENTER_ALIGNMENT);
ButtonA.setAlignmentY(CENTER_ALIGNMENT);

ButtonB.setAlignmentX(CENTER_ALIGNMENT);
ButtonB.setAlignmentY(CENTER_ALIGNMENT);

ButtonC.setAlignmentX(CENTER_ALIGNMENT);
ButtonC.setAlignmentY(CENTER_ALIGNMENT);

JPanel rightPanel = new JPanel();
rightPanel.setLayout(new BoxLayout(rightPanel, BoxLayout.Y_AXIS));

rightPanel.add(ButtonA);
rightPanel.add(ButtonB);
rightPanel.add(ButtonC);

outerPanel.add(leftPanel);
outerPanel.add(rightPanel);
getContentPane().add(outerPanel);

enter image description here

EDIT2: Fixed with vertical glue.

Solution

  • A GridLayout will always resize the components to fill the space available.

    Try using a vertical BoxLayoutinstead. See the section from the Swing tutorial on How to Use Box Layout for more information and examples.