Question

I am working on simple web application using Servlet & Jsp. But i have
one problem where i am working on web.xml. Can i use same url pattern
for many servlet class for example

code from jsp page

<form action="Answer" method="get">
                    <input id="foo" type="text" name="question"/> 
                    <input type="reset" value="Clear" />  
                    <br/>
                    <input type="submit" value="Submit"/>
                    <input type="submit" value="Back"/>
                </form>

Code from web.xml

 <servlet>
        <servlet-name>Answer</servlet-name>
        <servlet-class>RemoveAbbr</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Answer</servlet-name>
        <url-pattern>/Answer</url-pattern>
    </servlet-mapping>
 <servlet>
        <servlet-name>Answer</servlet-name>
        <servlet-class>Preprocess</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Answer</servlet-name>
        <url-pattern>/Answer</url-pattern>
    </servlet-mapping>

So, My question is what are true conditions from below options 1) if
i click on Submit button can it map to RemoveAbbr 2) if i click on
Back button can it map to Preprocess 3) creates conflict because same
url pattern(Form Action from jsp) can not used for different servlet
class name.

Answer 1

Every <servlet> needs to have a unique <servlet-name>, so you will need to rename one. Also, the <url-pattern>‘s should be different so the servlet container will know how to handle the requests.