Log4j 2 freezes when creating a logger

Question

I have this simple program:

package myPackage;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;

public class Test {
    private static Logger logger; 

    public static void main(String[] args) throws Exception {
        System.out.println("Creating logger...");
        logger = LogManager.getLogger(Test.class); 
        System.out.println("Logger created.");
        logger.info("Hello world!");
    }
}

If I run the program under the debugger, it prints:

Creating logger...

and then freezes.

If I run the program without a debugger, it prints:

Exception in thread "main" java.lang.StackOverflowError
    at sun.reflect.Reflection.quickCheckMemberAccess(Reflection.java:84)
    at java.lang.reflect.Method.invoke(Method.java:489)
    at org.apache.logging.log4j.util.ReflectionUtil.getCallerClass(ReflectionUtil.java:128)
    at org.apache.logging.log4j.util.ReflectionUtil.getCallerClass(ReflectionUtil.java:205)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:42)
    at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:42)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:329)
    at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:42)
    at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:37)
    at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:29)
    at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:48)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:329)
    [... more of the same]

I am using Log4j 2 version 2.5 along with version SLF4J 1.7.18.

EDIT: This is my class path:

// JRE 1.8.0_74

// Log4j 2
log4j-1.2-api-2.5.jar
log4j-1.2-api-2.5-javadoc.jar
log4j-1.2-api-2.5-sources.jar
log4j-api-2.5.jar
log4j-api-2.5-javadoc.jar
log4j-api-2.5-sources.jar
log4j-core-2.5.jar
log4j-core-2.5-javadoc.jar
log4j-core-2.5-sources.jar
log4j-core-2.5-tests.jar
log4j-flume-ng-2.5.jar
log4j-flume-ng-2.5-javadoc.jar
log4j-flume-ng-2.5-sources.jar
log4j-iostreams-2.5.jar
log4j-iostreams-2.5-javadoc.jar
log4j-iostreams-2.5-sources.jar
log4j-jcl-2.5.jar
log4j-jcl-2.5-javadoc.jar
log4j-jcl-2.5-sources.jar
log4j-jmx-gui-2.5.jar
log4j-jmx-gui-2.5-javadoc.jar
log4j-jmx-gui-2.5-sources.jar
log4j-jul-2.5.jar
log4j-jul-2.5-javadoc.jar
log4j-jul-2.5-sources.jar
log4j-nosql-2.5.jar
log4j-nosql-2.5-javadoc.jar
log4j-nosql-2.5-sources.jar
log4j-slf4j-impl-2.5.jar
log4j-slf4j-impl-2.5-javadoc.jar
log4j-slf4j-impl-2.5-sources.jar
log4j-taglib-2.5.jar
log4j-taglib-2.5-javadoc.jar
log4j-taglib-2.5-sources.jar
log4j-to-slf4j-2.5.jar
log4j-to-slf4j-2.5-javadoc.jar
log4j-to-slf4j-2.5-sources.jar
log4j-web-2.5.jar
log4j-web-2.5-javadoc.jar
log4j-web-2.5-sources.jar

// SLF4J 1.7.18
slf4j-api-1.7.18.jar

Answer 1

, . , SLF4J, . log4j-slf4j, log4j-core log4j-slf4j-impl. Log4g-core - Log4j 2. log4j-to-slf4j - API- Log4j 2, SLF4J. log4j-slf4j-impl Log4j api, .

4j-to-slf4j, log4j-slf4j-impl. , Log4j 2 , log4j-to-slf4j.

, - -, log4j-web .

, , , flume, no-sql jmx, .

Answer 2

, , 2 :

log4j-slf4j-impl-2.5.jar
log4j-to-slf4j-2.5.jar

https://logging.apache.org/log4j/2.0/log4j-slf4j-impl/index.html

Log4j 2 SLF4J (log4j-slf4j-impl-2.0.jar) SLF4J (log4j-to-slf4j-2.0.jar) , SLF4J Log4j 2.

:

http://www.slf4j.org/legacy.html

Answer 3

it worked for me - removed log4j-to-slf4j-2.5.jar