How to remove border around buttons?

问题

I have a JPanel with the GridLayout. In every cell of the grid I have a button. I see that every button is surrounded by a gray border. I would like to remove these borders. Does anybody know how it can be done?

回答1:

Border emptyBorder = BorderFactory.createEmptyBorder();
yourButton.setBorder(emptyBorder);

For more details on borders see the BorderFactory

回答2:

yourButton.setBorderPainted(false);

回答3:

In most recent Java versions it's necessary to call setContentAreaFilled(false) to remove the border entirely. Add an empty border for some padding:

button.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
button.setContentAreaFilled(false);

回答4:

I think it's very likely the borders are part of the buttons' GUI. You could try calling .setBorder(null) on all the buttons and see what happens!

回答5:

It can be like this:

yourButton.setBorder(null);

来源：https://stackoverflow.com/questions/2713190/how-to-remove-border-around-buttons