Finally I am ready with my roller with my faded java knowledge. Thanks to the Apache roller which made the daunting task so easy and Gelen for answering my stupid questions with patience.
Now I have a new problem of hosting this in a shared apache server where they don't allow any changes to be made in their lib directory.
Any workaround is there as I am not able to place roller.custom.properties and other jar files in lib directory of tomcat.
Thanks in advance