draw bar chart in java or servlet or jsp

[Arun Vethadas .T]

i'm doing a jsp project i need to draw a chart using database values. Reporting chart.when database updates chart automatically update i want. Total no of record vs no of passed record
(like 200 vs 143). pls send code in servlet or jsp or java. pls help me soon.send code in
[e-mail]
like Pie Chart,Bar Chart,column chart or graphs
Thanks,
arun.
[ January 16, 2002: Message edited by: arun vethadas ]

[David O'Meara]

...or rather than just giving the solution to you, we can discuss it here so everyone can share.
I'd have this as a JSP that created 2 images that get stretched depending on the proportions.
eg

<%
int value1 = 200;
int value2 = 143;
%>
<img src="gif1.gif" height="20" width="<=value1%>"><img src="gif2.gif" height="20" width="<=value2%>">

You also have the option of scaling or normalising the data (eg if they can only have a total width of 200 etc)
In addition, if you make the gifs 1*1, they are tiny but still look the same when stretched.
This what you were looking for?
Dave

[Jaume Sola]

See RChart: http://www.java4less.com and click on "RChart".
It has the following advantages:
- very reasonable price
- Documentation , support and online-tutorial are included
- Works as applet, servlet or bean.
- It works with java 1.1 also
- Supports more than 18 types of charts andhas interactive features (zoom,tips,scroll,html
links)
- Includes RChart Visual Builder (almost no programming)
- Can read data from database.
- source code is available can be freely modified for commercial applications also.