Building a war file with a folder structure

How do a build a war file with a folder structure? I have code that creates JarEntrys and writes jar files and resource files etc. to the war. When I look at the war that gets created using winzip the path names for all the entries are correct and everything appears correct. When I try to deploy this to Tomcat nothing deploys. It appears my war is in a folder structure. How can a build this folder structure in the war? When I look at a good war using BeyondCompare I see folders and files in the folders just like I would see looking at a directory on my system. When I use BeyondCompare to view one of my "bad" war files that I have created everything is in the root. There are no folders and no folder structure. I am using the java.util.jar API to create the war but I don't see any methods or any API that will let me build up any sort of folder structure. It seems like I am missing something basic here.

[921 byte] By [awajavaa] at [2007-11-27 5:08:09]
# 1
command is same for creating jar/war/ear.u simply need to execute jar /? for detail.
Yogesh.Nandwanaa at 2007-7-12 10:27:32 > top of Java-index,Desktop,Deploying...