修复Java.Swing绝对布局错误

Question

I'm currently using setLayout(null); (my preference) but as usual, it's easy to run into positioning problems. In this case I've got a AWT.Chooser and 2 JButton 's. Like so, Good One Every so often upon launch the 2nd JButton "Cancel" will render the buttons Y position + it's height , Like so, Bad One From what I could find throughout Oracles tutorials and here on Stack, it's setLayout(null) that's causing this issue. To fix it I've gone through various different layouts trying to find which one fits this particular design. One I found was CardLayout which seems to be the closest. Although getting the buttons to be in the right position doesn't fit my design. Is there a way to fix this without using a layout manager? Am I taking the wrong approach to this? I'm not picky, changing the window size if needed is doable and if a new design is needed, that's also not a problem. Thanks in advance!

Answer 1

One I found was CardLayout which seems to be the closest.

CardLayout? That makes no sense as that is not a layout for component positioning but rather component swapping. Are you sure you don't mean another? Myself, I usually nest JPanels, each with its own layout manager, and this way easily create complex GUI's that are easy to maintain.

For your GUI, I'd give the overall GUI a BorderLayout and add the central JPanel to the BorderLayout.CENTER position. I'd create a JPanel that uses FlowLayout(FlowLayout.TRAILING) as its layout for the bottom, and add my JButtons to it, and that add that to the main JPanel in the BorderLayout.PAGE_END position. The possibilities of how to solve this are endless.