Posted by
Richard VanMetter on
URL: http://imagej.273.s1.nabble.com/Runnable-JAR-from-Eclipse-does-not-run-Generates-errors-could-not-find-main-tp5011155.html
I have created a ImageJ-plugin project in Eclipse with an appropriate
"launch configuration". The project includes the ij.jar as a "referenced
library". The launch configuration runs perfectly in the Eclipse
environment, but when I try to export a runnable-JAR file I get the
following error:
"Could not find main method from given launch configuration."
and indeed the project will not run in Java (here is an attempt at the
command prompt):
C:\Users\Richard VanMetter\Desktop>java -jar MFPPD52a.jar
no main manifest attribute, in MFPPD52a.jar
Here is the manifest when ij is included as a folder in the JAR file:
Manifest-Version: 1.0
Class-Path: .
which has no reference to main method.
Here is the manifest when ij is included as a jar in the project JAR file:
Manifest-Version: 1.0
Rsrc-Class-Path: ./ ij.jar
Class-Path: .
In both cases, I tried adding the following line to the manifest manually
Main-Class: ij.ImageJ
The contents of the JAR file include, the classes written for my project
plus the following:
ij (either as a jar file or unzipped as a folder, depending
on export libraries option)
META-INF folder
org folder
but, it still will not run either by double-clicking, or in a command
window via either of these commands:
C:\Users\Richard VanMetter\Desktop>java -jar MFPPD52a.jar
Error: Could not find or load main class ij.ImageJ
C:\Users\Richard VanMetter\Desktop>javaw -jar MFPPD52a.jar
ij.ImageJ
(no error message, but no run either)
For completeness, the following works fine:
C:\Program Files (x86)\ImageJ>javaw -jar ij.jar ij.ImageJ
Has anyone experienced this problem? and know a solution?
Thanks to all,
Rich VanMetter
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