java - Change of state of a button when editing a JTextPane -

java - Change of state of a button when editing a JTextPane -

i know how apply listener jtextpane, because disable button when jtextpane empty , activate button when there somethings in it. i've tried itemchangelistener doesn't work.

do have ideas please ?

check documentlistener, link there's tutorial help solve task.

java swing listener jtextpane