MEKA >> Error: Could not find or load main class .\lib\Jama.jar

Question

I have Windows7 OS and want to use MEKA GUI what I did is the following:

1. downloading meka-release1.5.zip from http://sourceforge.net/projects/meka/files/meka-1.5.0/

2. extracting it, and type run.bat in cmd.exe

But I had the following Error :

Error: Could not find or load main class .\lib\Jama.jar

Can any one help with clear steps how to install and use MEKA EXplorer?

Answer 1

Suppose you have unzipped it into c:\tmp\meka\, so you have c:\tmp\meka\run.bat, you can:

1. open a shell (cmd.exe)
2. go inside your tmp dir: cd c:\tmp\meka\'
3. call .\run.bat'

You should at least use a JRE >= 6, because the script is using the star notation in order to list the Jars:

@ECHO OFF

SET MEMORY=512m
SET MAIN=meka.gui.explorer.Explorer

java -Xmx%MEMORY% -cp ".\lib\*" %MAIN% %1

Answer 2

I did have the same problem, only way to fix was adding all jar files to the -cp option

java -Xmx%MEMORY% -cp  "lib\Jama.jar;lib\junit.jar;lib\meka-1.5.jar;lib\moa.jar;lib\mst.jar;lib\mulan.jar;lib\weka.jar;lib\weka-test.jar" %MAIN% %1