how to remove the borders in JInternalFrame?

Question

i was able to remove the title bar from the JInternalFrame but i don't know how to remove the borders.

Answer 1

To remove the border simply call frame.setBorder(null);

Any border that is null is simply not shown.

Answer 2

To remove all borders, simply call:

this.setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 0, 0, 0));