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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
java programming - to display the excel bar charts

Posted by arrolwar (arrolwar), 11 May 2005
hello friends ....,

I am new to the site.....let me tell abt me ....I am just a student ..... preparing a tool for the company Alcatel in germany ... I promised that i will do it in Java .....the task is simple ....just to retreive the data from the database ..... manipulate the data and  write the data into the excel sheet so that the bar chart with the same data should be poped up......the bar chart should have the title and the date as per the database.....
                                   the small piece of  data is dumped into my computer  which i was able to maintain it in mysql and able to connect java through JDBC...i made some empty templates of excel sheets into which the output has to be written and according to that output the bar charts should be generated ....the department ppl want this tool to be so simple that the user has to just enter the specifications from the simple GUI  as per my program ....and get the output in the form of barcharts.....actually my idea was to make charts or graphs entirely in java programming like using chart.java or graph.java.....it was little bit complicated ...the ppl working with me also told me that i have chosen a big and complicated procedure....but cant help it ......

                  I promised them as i dont even know java well ........but now i am in the middle of the road ....i hope all the ppl of  the opentalk will help me in my project .....i have my future depending on this tool......


       if u have any sort of doubts .regarding this mail.......plz do write to me .....hoping for the replies....

ur friend,
arrolwar

Posted by admin (Graham Ellis), 11 May 2005
You've certainly chosen a lot of technologies to use ...

Your question reminded me of a sample program that we use on one of our Java courses - see http://www.wellho.net/resources/J953.html for a description of the training module and have a look at the various source code examples there.

The training notes of this module are actually release under an open training notes license ... so you'll find that there's a link on fromthe page I've given you above to some quite complete documentation in a .pdf file.

This is pure Java and Java graphics, by the way. Excel is another matter - I'm quites used to interfacing to MicroSoft formats in Perl but not so much in Java.



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