Question about JPanel and windows...

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#1482

From: Joseph Konstantourakis
Date: Mon, 24 Dec 2001 23:56

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First of all, I am  new in Java (in OO programming), so
if my question sounds funny, forgive me.

  I have created a JFrame, and after that a JPanel. I want the panel, to
draw certain 2D shapes on it, with tools(classes) I've created
myself. That, I made it.
  The problem is that I must create a class like this one:
SetWindow(Graphics2D mygraph,int Xleft,int Xright,int Ybottom,int Ytop).
What this class is supposed to do, is creating a rectangle area -defined by
these 4 int coordinates-. Everything that is drawn inside this area, will be
visible. Everything outside it, not. I figured out that what must be done
is, cutting the outside area in 4 pieces and applying a certain class(?) in
each one of them, to stop them from drawing. Am I right? And what is this
?class?? If I am wrong, is there any other way to do it?
  I use JBuilder5 Personal, and didn't make it to find anything in the 57MB
Help file I downloaded. Any help will be really appreciated, since I am new
to this (but I think is much better than C++ !)

Joseph
josephxx@otenet.gr

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From: "Joseph Konstantourakis" <josephxx@otenet.gr>
Newsgroups: borland.public.jbuilder.java.api
Subject: Question about JPanel and windows...
Date: Tue, 25 Dec 2001 01:56:52 +0200
Organization: An OTEnet S.A. customer
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