Issue was in Initiated mail ( https://markmail.org/thread/al5hvuxmpqtbg6xy) since i did not mail when Stefan replied to my query, I will continue the query in this mail.
Hi Stefan Bodewig, Path to, File ant-contrib-1.0b3.jar file is valid and it is downloaded from Git via jenkins script. The same is working on the Windows platform. The issue " CLASSPATH element /Users/rrr/workspace/_xxx_/_yyy_/ant-contrib-1.0b2.jar is not a JAR." occurs in MAC Platform for below lines in build.xml (build.xml is our project build. This build.xml is used, we are using ANT tool to build our project, via this build.xml file) About ant-contrib-1.0b2.jar file we have followed step 2 of installation mentioned in http://ant-contrib.sourceforge.net/
