How to scan all files in EAR folder

[fstn]

Hello, I have this EAR:

|--service.war

|--service.sar

|--sql

     |--1.31

     |    |--update.sql

     |
     |--1.30

     |     |--update.sql

     |
     |--1.29

          |--update.sql

I get stream from sql with sql= this.getClass.getClassLoader.getRessource("sql");

But that I want to do is to scan sql folder to like

String[] list=sql.list();

for (.........;i++){

   open  list[i]

}

but when I try to get path of sql I get D:/.......tmp/deploy/MyEAR.ear!/sql

How can I list file in an ear file?

thank you