完全删除JButton上的可见边框

Question

Can anyone tell me how to remove this yellow pointed border around button?

Following methods didn't do the job.

btnPdf.setBorder(BorderFactory.createEmptyBorder());
btnPdf.setContentAreaFilled(false);
btnPdf.setBorderPainted(false);

Answer 1

It could be caused by the button having focus. Try adding

btnPdf.setFocusPainted(false);