Re: Make a simple 4 row by 4 column scratch pad.

From:
Knute Johnson <nospam@rabbitbrush.frazmtn.com>
Newsgroups:
comp.lang.java.help
Date:
Thu, 25 Feb 2010 09:17:48 -0800
Message-ID:
<0hyhn.32168$e%2.5225@newsfe08.iad>
On 2/25/2010 8:18 AM, bH wrote:

Hi All,
I am using Windows XP and jdk1.6.0_16
On a JPanel, I want to make a simple 4 rows by 4
columns: a grid/ "scratch pad" that I can list two digit
numbers i.e. 10,12,...45.. one number each of the 16 cells.
I have tried a TextArea to do that. But using tabs is
a problem, to make it appear to be rows, columns.
Yet in a further search for a suitable demo,
<http://forums.sun.com/thread.jspa?threadID=226322&forumID=57>
this demo was written to demonstrate a TextPane. But while
testing/reading there was coding error of
"int tabWidth = charWidth charactersPerTab;"


This line of the example is missing the * to multiply the character
width by the number of characters per tab.

In reading for further discovery the
<http://java.sun.com/javase/6/docs/api/java/awt/FontMetrics.html>
This read:
"Note that the implementations of these methods are
inefficient, so they are usually overridden with more
efficient toolkit-specific implementations."

I am looking for further help with this problem
Your help is appreciated.
bH


I'm not sure I would tackle the problem this way. I would probably just
use a grid of JLabels and post my numbers in those. Or I would draw
them directly onto a JPanel if I needed more complicated formatting.

--

Knute Johnson
email s/nospam/knute2010/

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