Error in executing a jar file

Question

I have a jar file named- ParseCSV-0.0.1-SNAPSHOT.jar and the contents of it are -

META-INF/
META-INF/MANIFEST.MF
foo/
foo/ReadCSV.class
META-INF/maven/
META-INF/maven/Test/
META-INF/maven/Test/ParseCSV/
META-INF/maven/Test/ParseCSV/pom.xml
META-INF/maven/Test/ParseCSV/pom.properties

The main class is ReadCSV.class and it takes a CSV file (C:\Testting\ValidaResults.csv) as an input parameter. I am trying to execute the jar file from the command promt by running the following command-

java -jar . ParseCSV-0.0.1-SNAPSHOT.jar "C:\Testting\ValidationResult.csv"

But I am getting an error saying-

Error: Could not find or load main class foo.ReadCSVTest

What is going wrong here.

I recommend you take a look at http://stackoverflow.com/questions/18093928/what-does-could-not-find-or-load-main-class-mean — Leandro Carracedo, Dec 10 '14 at 17:47

score 1 · Accepted Answer · answered Dec 10 '14 at 17:53

Why do you have a . between jar and ParseCSV..?

Try this first:

java -jar ParseCSV-0.0.1-SNAPSHOT.jar "C:\Testting\ValidationResult.csv"

If this does not work, then try:

java -cp ParseCSV-0.0.1-SNAPSHOT.jar;. foo.ReadCSV "c:\Testting\ValidationResult.csv"

If this works, then i would inspect the META-INF/MANIFEST.MF file to figure out what the classpath is like, and what the value of Main-Class is. It seems to be running ReadCSVTest instead of ReadCSV.

I made a mistake in the pom file and set the main class wrong, hence the problem. — Som Sarkar, Dec 11 '14 at 15:52

score 0 · Answer 2 · answered Dec 10 '14 at 17:52

0

Your JAR file includes foo/ReadCSV.class, but your MainClass is set to foo.ReadCSVTest. You'll need to fix your Main-Class attribute in META-INF/MAINIFEST.MF

answered Dec 10 '14 at 17:52

Bill Brasky

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Error in executing a jar file

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