SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". error

I can also confirm this error.

Workaround: is to use external maven inside m2eclipse, instead of it's embedded maven.

That is done in three steps:

1 Install maven on local machine (the test-machine was Ubuntu 10.10)

mvn --version Apache Maven 2.2.1 (rdebian-4) Java version: 1.6.0_20 Java home: /usr/lib/jvm/java-6-openjdk/jre Default locale: de_DE, platform encoding: UTF-8 OS name: "linux" version: "2.6.35-32-generic" arch: "amd64" Family: "unix"

2 Run maven externally link how to run maven from console

> cd path-to-pom.xml > mvn test

    [INFO] Scanning for projects...
    [INFO] ------------------------------------------------------------------------
    [INFO] Building Simple
    [INFO]    task-segment: [test]
    [INFO] ------------------------------------------------------------------------
    [...]
    [INFO] Surefire report directory: [...]/workspace/Simple/target/surefire-reports
    
    -------------------------------------------------------
     T E S T S
    -------------------------------------------------------
    Running net.tverrbjelke.experiment.MainAppTest
    Hello World
    Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.042 sec
    
    Results :
    
    Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
    
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD SUCCESSFUL
    [INFO] ------------------------------------------------------------------------
    [...]

3 inside m2eclipse: switch from embedded maven to local maven

find out where local maven home installation dir is (mvn --version, or google for your MAVEN_HOME, for me this helped me that is /usr/share/maven2 )

in eclipse Menu->Window->Preferences->Maven->Installation-> enter that string. Then you should have switched to your new external maven.

then run your Project as e.g. "maven test".

The error-message should be gone.

There is a documentation in SLf4J site to resolve this. I followed that and added slf4j-simple-1.6.1.jar to my aplication along with slf4j-api-1.6.1.jar which i already had.This solved my problem

slf4j

If you are using Gradle add this:

dependencies { 
... 
compile "org.slf4j:slf4j-simple:1.7.9" 
... 
}

Had similar error with the same result with Gradle and was able to solve it by following:

//compile 'org.slf4j:slf4j-api:1.7.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-slf4j-impl', version: '2.1'

Out-commented line is the one which caused the error output. I believe you can transfer this to Maven.

Paste this code to your pom.xml file. It works for me.

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-simple</artifactId>
    <version>1.6.1</version>
    <scope>test</scope>
</dependency>

You haven't specify version in your maven dependency file may be thats why it is not picking the latest jar
As well as you need another deppendency with slf4j-log4j12 artifact id.
Include this in your pom file

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.5.6</version>
</dependency>

Let me know if error is still not resolved
I also recomend you to see this link

Had been over looking the issue having surfaced it. Believe this will be a good read for others who come down here with the same issue:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=387064

I had the similar issue for my Spring Boot - Gradle application running on Eclipse Luna. I could resolve it by manually adding an entry in my project's .classpath

<classpathentry sourcepath="C:/Users/<username>/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-simple/1.7.7/3150039466ad03e6ef1c7ec1c2cbb0d96710cf64/slf4j-simple-1.7.7-sources.jar" kind="lib" path="C:/Users/<username>/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-simple/1.7.7/8095d0b9f7e0a9cd79a663c740e0f8fb31d0e2c8/slf4j-simple-1.7.7.jar"/>

Idea is to follow this solution. But how to implement is dependent on case to case. One way of fixing is the one that I used above.

Hope this helps.

I had the same problem in writing the Kafka producer program using java. This error is coming due to the wrong slf4j library. use below slf4j-simple maven dependency that will fix your problem.

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-simple</artifactId>
    <version>1.6.1</version>
    <scope>test</scope>
</dependency>

I had same problem. I solved it with this way. Add this dependencies to maven "pom.xml" and reload maven. than try to run your code. ` org.slf4j slf4j-nop 2.0.0-alpha5 test

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>2.0.0-alpha5</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>2.0.0-alpha5</version>
    </dependency>`

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-nop</artifactId>
        <version>2.0.0-alpha5</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>2.0.0-alpha5</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>2.0.0-alpha5</version>
    </dependency>

This is not an error message but a warning. It is very clearly explained in their website as :

This warning, i.e. not an error, message is reported when no SLF4J providers could be found on the class path. Placing one (and only one) of slf4j-nop.jar slf4j-simple.jar, slf4j-log4j12.jar, slf4j-jdk14.jar or logback-classic.jar on the class path should solve the problem. Note that these providers must target slf4j-api 1.8 or later.

In the absence of a provider, SLF4J will default to a no-operation (NOP) logger provider.

https://www.slf4j.org/codes.html#StaticLoggerBinder