Diffrence between copy and refractor copy

[email protected] Tue, 21 Nov 2017 06:00:23 +0000 (UTC)

Newsgroups	gmane.comp.java.netbeans.modules.openide.devel
Message-ID	<[email protected]>

Hi,
i am a beginner java developer and iam a huge fan of netbeans because
of its support for beginners rather than other IDE's,so i would like to
know the difference between copy and refractor copy(usually displays
when right click on a class file).
Note:Expecting beginner level answer.
Thank You.