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Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory

 
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Hi all,

I am using NetBeans, and I get his error



I have downloaded slf4j-1.7.13.zip it si a folder when I add it as a folder to the libraries of Netbeans it is not recognized then I just went insede the folder and I added slf4j-jcl-1.7.13.jar and I still get the error:


Any idea, please?

Regards, Isaac
 
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Please start by showing us how you are adding that jar to your classpath.
 
Angus Ferguson
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Java application->Libreries->rigth click->Add jar
 
Campbell Ritchie
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So you are using Eclipse? Please inspect that .jar file and confirm the appropriate .class file is inside it.
 
Angus Ferguson
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I am using Netbeans
 
Campbell Ritchie
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And is that .class file actually in that .jar?
 
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Are there more jar files in that zip file?

There should be...you seem to have not added the api one, which is the core.
 
Angus Ferguson
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There are plenty of files here http://slf4j.org/download.html

When I add all of them I get this:



Any idea, please?

Regards, Isaac
 
Dave Tolls
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Don't just throw things at the wall and hope?

As the user manual for SL4J says, you need the API and a binding.
You've added every binding under the sun, by the looks of it.

The HelloWorld example on that page uses just the API jar and the 'simple' binding.
 
Angus Ferguson
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True I deleted a jar was which not needed and now it works.
 
Campbell Ritchie
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What was in the .jar you deleted? Was there a package structure similar to that for the logger factory class?
 
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