Servlet defined properties - JARxWAR, initArgs

[Edilmar Alves]

At JServ, I should create a file someservlet.properties for specific
configurations, like these:
   repositories=d:\...\sistemas\Consulta.jar
   repositories=d:\...\sistemas\Senha.jar
   ... # some lines below
   servlet.Consulta.ServletResConsulta.initArgs=DIRPS=d:/.../sistemas

Can I specify JAR files into Tomcat ? Or does I need to use WAR files ?
What's the utility to generate WAR files (zip, tar, ...) ?

I need to specify the "initArgs" param DIRPS. Where do I do this ?