log4j 2 suport error --------------------- Key: JGRP-1879 URL: https://issues.jboss.org/browse/JGRP-1879 Project: JGroups Issue Type: Bug Affects Versions: 3.4.4, 3.5 Environment: jdk 7 Reporter: ming yue Assignee: Bela Ban Fix For: 3.6 LogFactory suport jdk log,log4j,log4j 2,but useing code like this: USE_JDK_LOGGER=isPropertySet(Global.USE_JDK_LOGGER); IS_LOG4J_AVAILABLE=isAvailable("org.apache.log4j.Logger"); IS_LOG4J2_AVAILABLE=isAvailable("org.apache.logging.log4j.core.Logger"); initialize var flag, the isAvailable function depend on ClassNotFoundException ,when useing log4j 2 Log4j 1.x bridge, has org.apache.log4j.Logger class ,then exception is not ClassNotFoundException ,change isAvailable cunction to: protected static boolean isAvailable(String classname) { try { return Class.forName(classname) != null; } catch(Exception cnfe) { return false; } }