Center JButtons inside a JPanel in a JScrollPane-CodePudding

I am trying to add JButton components to a JPanel that I added to a JScrollPane. I want that they are vertically aligned. I already found the solution with the BoxLayout(panel, BoxLayout.Y_AXIS) in the panel, but after I did that the buttons had different widths.

I also would like to add some space between the buttons.

CodePudding user response：

You need to use a different layout. Grid or GridBag is what you're looking for, although GridBag is overkill for something this simple:

panel.setLayout(new GridLayout(3, 1));
panel.add(new JButton("Button 1"));
panel.add(new JButton("Button 2"));
panel.add(new JButton("Button 3"));

CodePudding user response：

Use a gridbaglayout , and apply vertical spacers at the button of each button. Also the text in button is not equal to the second and third button dats why it has a different size. So you can adjust it using the preferred size tool