Problem using SGT library / Java / ...

[Damir Dezeljin <programing@nib.si>]

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Hi!

I'm engaged to write a java applet/aplication using SGT to display a 
scalar plot of our mesurements. I'm using Borland J builder Personal 
edition form my development. I already wrote an Java program that show 
'demo' data. This program is functioning perfectly in JBuilder and I can 
even compile it with SUN JDK, but I can't than run it as standalone 
application nor as applet. Can someone help me pleas?

My source can be downloaded from 
http://www.dezo.org/FileStore/ScalarPlot.java .

# I compiled the source with:
javac ScalarPlot.java
# I don't know why I get 3 .class files from this file.

# Then I add all the sources to the SGT .jar archive with:
jar -uvf sgt_v21.jar *.class

# Then I defined a default .class for the .jar archive:
jar -uvmf mainClass.txt sgt_v21.jar
# mainClass.txt contains:
Main-Class: ScalarPlot

# My HTML file contains:
<applet codebase="."
  code="ScalarPlot.class"
  archive="sgt_v21.jar"
  width=800 height=600>
</applet>

When I try to start the file in IE the applet box display "Exception: 
java.lang.NoClassDefFoundError: gov/noaa/pmel/sgt/JPane" for a secunde or 
two and than nothing is working. I try to dubleclick the .jar file to 
start the default application, but this doesn't work too.

Please help me.

I have another question:
Do I have to redistribuite the entire SGT .jar file on the internet so 
that my applet will work (I mean if there are any license issues)? << 
because if I skip some files from the archive, I can strip down its size.

And the last question. Has SGT library any class to facility parsing a 
file from the internet server (same location as .jar archive)? Is there 
any source example? I need it to get my hourly data which I want to 
display. Is there a way to transport those data encrypted or something 
similar so that a web visitior can't access the plain .txt file but he can 
only see the plot?

Regards,
Dezo

PS: If posible, please send a CC of replay to my e-mail dezo@nib.si


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