Which jar file for the classpath ?

Question

At my office on my machine i have weblogic 8.1 and tomcat installed.
weblogic have 2.3 version of servlet and
tomcat have 2.4 version of servlet
weblogic is for production purpose (development of servlet, jsp and ejb)
and tomcat is for my own practice. (just for servlet and jsp)
i have weblogic.jar as well as servlet-api.jar in my class path.
now when i compile my servlets which jar file the compiler will use to create the classes.
if the compiler chooses servlet-api.jar will my servlet run in weblogic
else
if the compiler chooses weblogic.jar will my servlet run in tomcat

Answer 1

i have weblogic.jar as well as servlet-api.jar in my class path.What does this mean? Do you have a system CLASSPATH environment variable?
Bad idea.
now when i compile my servlets which jar file the
compiler will use to create the classes.You should set CLASSPATH using the -classpath option on javac.exe.
The compiler won't "choose" anything, because it has no idea how you'll deploy. It'll use the one that you tell it to. If you have just a system CLASSPATH it'll always use the first JAR that it finds with the packages it needs.
You need to specify exactly what you want the compiler to use.
In the case of servlet.jar it might not matter, because that's pretty standard. JSPs and EJBs are another story, however. If you change deployment, it's best to recompile and repackage the Web app.
Learn Ant. It'll help you automate this.
%