Is it possible to remove the close button from a JFrame or at least disable it?
It is possible to disable the function of the close button on a JFrame, but it does not appear to be possile to remove it. The close button is placed by the native windowing system, and there do not seem to be any API hooks provided to tell the windowing system not to draw the button.
The easiest way to disable the close action on a
JFrame is to call its
method accepts an integer as a parameter representing the operation to perform. This value must be one of the constants defined in the
WindowConstants interface. Using the value
WindowConstans.DO_NOTHING_ON_CLOSE will do the trick. You will notice that
JFrame implements the
WindowConstants interface, so it is also possible to use
JFrame.DO_NOTHING_ON_CLOSE, which may be clearer. Note, however, that
JInternalFrame provides the ability to control the presence or absence of an exit button.