Unreachable catch block for ClassNotFoundException

Hello everyone can some one help me out here i am trying to develop this servlet for my jsp and when i try to deploy it using tomcat i get this error saying "Unreachable catch block for ClassNotFoundException. This exception is never thrown from the try statement body"

can some one help me figure this out or tell me what i am doing wrong ???

this is my code down below and the problem is at line 88

I am using Struts

basically what i have done is created an action class and a DAO which inserts the data into the tables I could fill up the data fields without the servlet but once i created the servlet i get that error

Regards

Prathik

package project.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import project.dao.CandRepDAO;

/**
 * Servlet implementation class candrep
 */
@WebServlet(asyncSupported = false, name = "candrep", urlPatterns = {"/candrep.jsp"},
		initParams = {@WebInitParam(name="firstName", value="firstName"), 
		@WebInitParam(name="lastName", value="lastName"),
		@WebInitParam(name="yourgender", value="yourgender"),
		@WebInitParam(name="yourqualification", value="yourqualification"),
		@WebInitParam(name="email", value="email"),
		@WebInitParam(name="contactNumber", value="contactNumber"),
		@WebInitParam(name="Industry", value="Industry"),
		@WebInitParam(name="yourworkexperience", value="yourworkexperience"),
		@WebInitParam(name="preferredIndustry", value="preferredIndustry"),
		@WebInitParam(name="youremploymentstatus", value="youremploymentstatus"),}
		)

public class candrep extends HttpServlet {
	private static final long serialVersionUID = 1L;

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		  response.setContentType("text/html");
		  PrintWriter out = response.getWriter();
			
		  
		    String firstName = request.getParameter("firstName");
			String lastName = request.getParameter("lastName");
			String yourgender = request.getParameter("yourgender");
			String yourqualification = request.getParameter("yourqualification");
			String email = request.getParameter("email");
			String contactNumber = request.getParameter("contactNumber");
			String Industry = request.getParameter("Industry");
			String yourworkexperience = request.getParameter("yourworkexperience");
			String preferredIndustry = request.getParameter("preferredIndustry");
			String youremploymentstatus = request.getParameter("youremploymentstatus");

try{
				CandRepDAO CandDAO = new CandRepDAO();
		 	CandDAO.createConnection();
		 	CandDAO.insertCandRepInfo(firstName,lastName,yourgender,yourqualification,email,contactNumber,Industry,yourworkexperience,preferredIndustry,youremploymentstatus);
		 	CandDAO.shutdown();
			
			out.println("Your FirstName is :"
					+ "" + firstName + "" + " ");

out.println("Your Last Name is :"
					+ "" + lastName + "");

out.println("Your Contact Number is :"
					+ "" + yourgender + "");
			
			out.println("Your Contact Number is :"
					+ "" + yourqualification + "");
			
			out.println("Your Contact Number is :"
					+ "" + email + "");

out.println("Your Email is :"
					+ "" + contactNumber + "");
			
			out.println("Your Current Industry :"
					+ "" + Industry + "");
			
			out.println("Your Current Industry :"
					+ "" + yourworkexperience + "");
			
			out.println("Your Preferred Industry is :"
					+ "" + preferredIndustry + "");
			
			out.println("Your Current Industry :"
					+ "" + youremploymentstatus + "");
			
			}
			catch(ClassNotFoundException e){
				 out.println("Couldn't load database driver: " 
				 + e.getMessage());
				 }
				 catch (Exception e){
				 out.println(e);
				 }
				} 
				}

this is my web.xml file

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
 <display-name>project</display-name>
 <display-name>Struts2 Application</display-name>
 <filter>
 <filter-name>struts2</filter-name>
 <filter-class>
 org.apache.struts2.dispatcher.FilterDispatcher
 </filter-class>
 </filter>
 <filter-mapping>
 <filter-name>struts2</filter-name>
 <url-pattern>/*</url-pattern>
 </filter-mapping>
 <welcome-file-list>
 <welcome-file>Login.jsp</welcome-file>
 </welcome-file-list>
 <servlet>
 <description></description>
 <display-name>candrep</display-name>
 <servlet-name>candrep</servlet-name>
 <servlet-class>project.servlet.candrep</servlet-class>
 </servlet>
 <servlet-mapping>
 <servlet-name>candrep</servlet-name>
 <url-pattern>/candrep.jsp</url-pattern>
 </servlet-mapping>
</web-app>

And this is what i get when i try to deploy it

SEVERE: Servlet.service() for servlet [candrep] in context with path [/project] threw exception [Servlet execution threw an exception] with root cause
java.lang.Error: Unresolved compilation problem:
Unreachable catch block for ClassNotFoundException. This exception is never thrown from the try statement body

check curly braces in servlet.!!

Neeraj Dhiman wrote:check curly braces in servlet.!!

I don't think that's the problem braces seem to be in order

ClassNotFoundException is a checked exception and your code is not throwing it anywhere explicitly. So compiler is telling you that this code will never be executed, Please remove that try and catch block as it is not required.

Piyush Mangal wrote:ClassNotFoundException is a checked exception and your code is not throwing it anywhere explicitly. So compiler is telling you that this code will never be executed, Please remove that try and catch block as it is not required.

i removed the try and catch block but this is what i get when i try to deploy

Your FirstName is :null
Your Last Name is :null Your Contact Number is :null Your Contact Number is :null Your Contact Number is :null Your Email is :null Your Current Industry :null Your Current Industry :null Your Preferred Industry is :null Your Current Industry :null

and further more it inserts the querry into the database table

Insert Query formed: INSERT INTO candreppage4.posts(FirstName,LastName,Gender,Qualification,Email,ContactNumber,Industry,WorkExperience,PreferredIndustry,EmploymentStatus) VALUES('null','null','null','null','null','null','null','null','null','null')

What does that have to do with try and catch block?

Piyush Mangal wrote:What does that have to do with try and catch block?

well when i deploy it does not show me the required jsp and after i removed the try and catch block that's the result i got and it inserted a querry into the table

well when i deploy it does not show me the required jsp and after i removed the try and catch block that's the result i got and it inserted a querry into the table

And why do you think it should show you a required jsp? Where are you forwarding to a JSP page in your servlet? Where are you checking for null values in your servlet?