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Re: Problem with java package and xlsread
From: |
Philip Nienhuis |
Subject: |
Re: Problem with java package and xlsread |
Date: |
Sat, 23 Jun 2012 13:35:48 -0700 (PDT) |
frage wrote
>
> I am trying to use xlsread, I have installed io and java packages and are
> loading.
>
Are both loaded? (or do I misunderstand)
In Octave, do
pkg load java io
What is the output of the Octave commands
javamem
and
chk_spreadsheet_support ('', 3)
?
> I HAVE A JDK INSTALLED on my pc.
>
Good.
Before installing the Java package, did you (in Octave) set the environment
variable JAVA_HOME? (setenv ("JAVA_HOME", "/path/to/java/....")?
Otherwise the Java package won't install properly.
Read the doc in the Java package /doc folder or here:
http://www.octave.org/wiki/index.php?title=Java_package#How_to_install_the_java_package_in_Octave.3F
(watch out for line wrap)
> i HAVE ALSO DOWNLOADED Apache POI.
>
> When I try to add the path of the poi, it gives an error saying that
> octave.jar does not exist.
>
octave.jar is part of the Java package (if it was properly compiled &
installed).
This error message clearly tells us that you don't have the Java package
either loaded, or (properly) installed (I suspect the latter).
> I have tried everything I can think of but I just cant get it to work.
>
> Any help would be great.
>
It would be helpful to know:
- your operating system (+ 32 or 64 bit)
- Octave version
- Java JDK version, and where it is installed
Time and again, proper installation of the Java package is a big stumbling
block.
So, first make sure the Java package is properly installed.
1. set JAVA_HOME (see above)
2. pkg install -auto -forge -verbose java
.....and watch the output for a message like "Java.... yes". If you see "JDK
not found", something is wrong with the JAVA_HOME setting.
If the Octave command
javamem
works, please report back; then we can help with the next step: io package
setup (which is easy).
Philip
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