mm-controller

				******************* BuyProduct.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.ProductDetail;
import marketmanagement.model.PurchaseProduct;
import marketmanagement.model.UserManagement;

/**
 * Servlet implementation class BuyProduct
 */
public class BuyProduct extends HttpServlet {
	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		String productId=request.getParameter("productId");

		int id=Integer.parseInt(productId);
		//sSystem.out.println(pId);
		int roleId=2;
		List<UserManagement> getUserList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		ProductDetail product=new ProductDetail();
		try{
			product=dao.getProductById(id);
			request.setAttribute("product", product);
			getUserList =dao.useralrdyLogin(roleId);
			//System.out.println(getNameList);
			request.setAttribute("getUserList", getUserList);

			request.getRequestDispatcher("/WEB-INF/jsp/buy-product.jsp").forward(request, response);

		}catch (Exception e) {
			throw new RuntimeException(e);
		}


	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		PrintWriter out=response.getWriter();
		String productCode=request.getParameter("productCode");
		String productName=request.getParameter("productName");
		int productPrice=Integer.parseInt(request.getParameter("productPrice"));
		int productQuntity=Integer.parseInt(request.getParameter("productQuntity"));
		int total=productPrice*productQuntity;
		String seller=request.getParameter("seller");
		int productId=Integer.parseInt(request.getParameter("productId"));
		int userId=Integer.parseInt(request.getParameter("user"));

		PurchaseProduct purchase=new PurchaseProduct();
		purchase.setProductCode(productCode);
		purchase.setProductName(productName);
		purchase.setProductPrice(productPrice);
		purchase.setProductQuntity(productQuntity);
		purchase.setTotal(total);
		purchase.setSeller(seller);
		purchase.setProductId(productId);
		purchase.setUserId(userId);
		System.out.println("purchase="+purchase);
		int status=0;
		Dao dao=new Dao();
		try{
			status=dao.purchaseProduct(purchase);
			response.sendRedirect(request.getContextPath()+"/display-to-buyer");
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
		if(status!=0){
			out.print("Product Purchase Successfully");
		}else{
			out.print("Sorry! Product not Purchase Successfully");
		}

	}

}

				******************* DeleteProduct.java ************************
package marketmanagement.controller;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;

/**
 * Servlet implementation class DeleteProduct
 */
public class DeleteProduct extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		PrintWriter out=response.getWriter();
		int id=Integer.parseInt(request.getParameter("productId"));
		int user=0;
		Dao dao =new Dao();
		try{
			user=dao.deleteProduct(id);
			response.sendRedirect(request.getContextPath()+"/display-product");
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
		if(user!=0)
			out.print("Data delete Successfully");
			//System.out.println("user delete");
		else
			out.print("Sorry! Data not deleted Successfully");
	}

}

				******************* DeleteUserInfo.java ************************
package marketmanagement.controller;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;


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

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		PrintWriter out=response.getWriter();
		int id=Integer.parseInt(request.getParameter("userId"));
		int user=0;
		Dao dao =new Dao();
		try{
			user=dao.deleteUser(id);
			response.sendRedirect(request.getContextPath()+"/display-user");
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
		if(user!=0)
			out.print("Data delete Successfully");
			//System.out.println("user delete");
		else
			out.print("Sorry! Data not deleted Successfully");
	}

}

				******************* DisplayProduct.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.ProductDetail;
import marketmanagement.model.RoleMaster;
import marketmanagement.model.UserManagement;

/**
 * Servlet implementation class DisplayProduct
 */
public class DisplayProduct extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id=1;
		List<ProductDetail> productList=new ArrayList<ProductDetail>();
		List<UserManagement> getUSerList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		try{
			productList =dao.listProduct(0);
			getUSerList=dao.useralrdyLogin(id);
			request.setAttribute("productList", productList);
			request.setAttribute("getUSerList", getUSerList);
			request.getRequestDispatcher("/WEB-INF/jsp/display-product.jsp").forward(request, response);
			//rd.forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}



}

				******************* DisplayPurchaseProduct.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.ProductDetail;
import marketmanagement.model.PurchaseProduct;
import marketmanagement.model.UserManagement;


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

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		int id=2;
		List<PurchaseProduct> purchaseProductList=new ArrayList<PurchaseProduct>();
		List<UserManagement> getUSerList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		try{
			purchaseProductList =dao.listPurchaseProduct(0);
			getUSerList=dao.useralrdyLogin(id);
			request.setAttribute("purchaseProductList", purchaseProductList);
			request.setAttribute("getUSerList", getUSerList);
			request.getRequestDispatcher("/WEB-INF/jsp/display-purchase-product.jsp").forward(request, response);
			//rd.forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}


	}

}

				******************* DisplayToBuyer.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.ProductDetail;
import marketmanagement.model.UserManagement;

/**
 * Servlet implementation class DisplayToBuyer
 */
public class DisplayToBuyer extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id=1;
		List<ProductDetail> productList=new ArrayList<ProductDetail>();
		List<UserManagement> getUSerList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		try{
			productList =dao.listProduct(0);
			getUSerList=dao.useralrdyLogin(id);
			request.setAttribute("productList", productList);
			request.setAttribute("getUSerList", getUSerList);
			request.getRequestDispatcher("/WEB-INF/jsp/display-to-buyer.jsp").forward(request, response);
			//rd.forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

}

				******************* DisplayUser.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.UserManagement;
import marketmanagement.model.RoleMaster;

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


	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		List<UserManagement> userList=new ArrayList<UserManagement>();
		List<RoleMaster> listOfRole=new ArrayList<RoleMaster>();
		Dao dao=new Dao();
		try{
			userList =dao.listUser(0);
			listOfRole =dao.getUserRole();
			request.setAttribute("userList", userList);
			request.setAttribute("listOfRole", listOfRole);
			RequestDispatcher rd=request.getRequestDispatcher("/WEB-INF/jsp/display-user.jsp");
			rd.forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}


	}



}

				******************* EditProduct.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.ProductDetail;
import marketmanagement.model.RoleMaster;
import marketmanagement.model.UserManagement;

/**
 * Servlet implementation class EditProduct
 */
public class EditProduct extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		String productId=request.getParameter("productId");
		int pId=Integer.parseInt(productId);
		int id=1;
		List<UserManagement> getUserList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		ProductDetail product=new ProductDetail();
		try{
			product=dao.getProductById(pId);
			request.setAttribute("product", product);
			getUserList =dao.useralrdyLogin(id);
			//System.out.println(getNameList);
			request.setAttribute("getUserList", getUserList);

			request.getRequestDispatcher("/WEB-INF/jsp/edit-product.jsp").forward(request, response);

		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}


	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		PrintWriter out=response.getWriter();
		int productId=Integer.parseInt(request.getParameter("productId"));
		String productCode=request.getParameter("productCode");
		String productName=request.getParameter("productName");
		String productPrice=request.getParameter("productPrice");
		String productQuntity1=request.getParameter("productQuntity");
		int productQuntity=Integer.parseInt(productQuntity1);
		String productDescription=request.getParameter("productDescription");
		String userId1=request.getParameter("Seller");
		int userId=Integer.parseInt(userId1);

		ProductDetail product=new ProductDetail();
		product.setProductId(productId);
		product.setProductCode(productCode);
		product.setProductName(productName);
		product.setProductPrice(productPrice);
		product.setProductQuntity(productQuntity);
		product.setProductDescription(productDescription);
		product.setUserId(userId);

		int status=0;
		Dao dao=new Dao();
		try{
			status=dao.updateProductInfo(product);
			response.sendRedirect(request.getContextPath()+"/display-product");
		}catch (Exception e) {
			// TODO: handle exception
		}
		if(status!=0){
			out.print("Data Update Successfully");
			//System.out.println("Data Update Successfully");
		}else{
			out.print("Sorry! Data not update Successfully");
			//System.out.println("Sorry! Data not update Successfully");
		}
	}

}

				******************* EditUserInfo.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.UserManagement;
import marketmanagement.model.RoleMaster;

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

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		String userId=request.getParameter("userId");
		int id=Integer.parseInt(userId);
		List<RoleMaster> getUserRole=new ArrayList<RoleMaster>();
		Dao dao=new Dao();
		UserManagement userMngmt=new UserManagement();
		try{
			userMngmt=dao.getUserById(id);
			request.setAttribute("userMngmt", userMngmt);
			getUserRole =dao.getUserRole();
			//System.out.println(getNameList);
			request.setAttribute("getUserRole", getUserRole);

			request.getRequestDispatcher("/WEB-INF/jsp/update-user-info.jsp").forward(request, response);

		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}


	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		PrintWriter out=response.getWriter();
		int userId=Integer.parseInt(request.getParameter("userId"));
		String userName=request.getParameter("userName");
		String email=request.getParameter("email");
		String password=request.getParameter("password");
		String phoneNo=request.getParameter("phoneNo");
		String dateOfBirth=request.getParameter("dateOfBirth");
		String balance=request.getParameter("balance");
		String roleId1=request.getParameter("role");
		int roleId=Integer.parseInt(roleId1);

		UserManagement usermngmt=new UserManagement();
		usermngmt.setUserId(userId);
		usermngmt.setUserName(userName);
		usermngmt.setEmail(email);
		usermngmt.setPassword(password);
		usermngmt.setPhoneNo(phoneNo);
		usermngmt.setDateOfBirth(dateOfBirth);
		usermngmt.setBalance(balance);
		usermngmt.setRoleId(roleId);

		int status=0;
		Dao dao=new Dao();
		try{
			status=dao.updateUserInfo(usermngmt);
			response.sendRedirect(request.getContextPath()+"/display-user");
		}catch (Exception e) {
			// TODO: handle exception
		}
		if(status!=0){
			out.print("Data Update Successfully");
			//System.out.println("Data Update Successfully");
		}else{
			out.print("Sorry! Data not update Successfully");
			//System.out.println("Sorry! Data not update Successfully");
		}

	}

}

				******************* GetData.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.UserManagement;
import marketmanagement.model.ProductDetail;
import marketmanagement.model.PurchaseProduct;
import marketmanagement.model.RoleMaster;

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


	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String methodName=request.getParameter("methodName");

		if(methodName==null){
			response.getWriter().println("param methodName not found!");
			return;
		}

		switch (methodName) {
		case "getUserData":
			getUserData(request, response);
			break;

		case "getProductData":
			getProductData(request, response);
			break;

		case "displayProductData":
			displayProductData(request, response);
			break;

		case "displayPurchaseProductData":
			displayPurchaseProductData(request, response);
			break;

		default:
			response.getWriter().println("invalid methodName: "+methodName);
			break;
		}

	}

	//========================================= Ajax Methods

	protected void getUserData(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String id=request.getParameter("roleId");
		int roleId=Integer.parseInt(id);

		List<UserManagement> userList= new ArrayList<UserManagement>();
		List<RoleMaster> listOfRole =new ArrayList<RoleMaster>();
		Dao dao=new Dao();
		try{
			listOfRole =dao.getUserRole();
			userList=dao.listUser(roleId);

			request.setAttribute("userList", userList);
			request.setAttribute("listOfRole", listOfRole);

			request.setAttribute("roleId", roleId);
			RequestDispatcher rd=request.getRequestDispatcher("/WEB-INF/jsp/get-user-data-ajax.jsp");
			rd.forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

	protected void getProductData(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		String id=request.getParameter("userId");
		int userId=Integer.parseInt(id);

		List<ProductDetail> productList= new ArrayList<ProductDetail>();
		List<UserManagement> getUSerList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		try{
			productList =dao.listProduct(userId);

			//getUSerList=dao.listUser(roleId);

			//request.setAttribute("getUSerList", getUSerList);
			request.setAttribute("productList", productList);

			request.setAttribute("userId", userId);
			RequestDispatcher rd=request.getRequestDispatcher("/WEB-INF/jsp/get-product-data-ajax.jsp");
			rd.forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

protected void displayProductData(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		String id=request.getParameter("userId");
		int userId=Integer.parseInt(id);

		List<ProductDetail> productList= new ArrayList<ProductDetail>();
		List<UserManagement> getUSerList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		try{
			productList =dao.listProduct(userId);

			//getUSerList=dao.listUser(roleId);

			//request.setAttribute("getUSerList", getUSerList);
			request.setAttribute("productList", productList);

			request.setAttribute("userId", userId);
			RequestDispatcher rd=request.getRequestDispatcher("/WEB-INF/jsp/get-buyer-data-ajax.jsp");
			rd.forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

protected void displayPurchaseProductData(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

	String id=request.getParameter("userId");
	int userId=Integer.parseInt(id);

	List<PurchaseProduct> purchaseProductList= new ArrayList<PurchaseProduct>();
	List<UserManagement> getUSerList=new ArrayList<UserManagement>();
	Dao dao=new Dao();
	try{
		purchaseProductList =dao.listPurchaseProduct(userId);

		//getUSerList=dao.listUser(roleId);

		//request.setAttribute("getUSerList", getUSerList);
		request.setAttribute("purchaseProductList", purchaseProductList);

		request.setAttribute("userId", userId);
		RequestDispatcher rd=request.getRequestDispatcher("/WEB-INF/jsp/get-buyer-product-purchase-ajax.jsp");
		rd.forward(request, response);
	}catch (Exception e) {
		throw new RuntimeException(e);
	}
}
}

				******************* LoginUser.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import marketmanagement.dao.Dao;
import marketmanagement.model.RoleMaster;
import marketmanagement.model.UserManagement;


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

	static int Seller=1;
	static int Buyer=2;

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		List<RoleMaster> getUSerRole=new ArrayList<RoleMaster>();
		Dao dao=new Dao();
		try{
			getUSerRole=dao.getUserRole();
			request.setAttribute("getUSerRole", getUSerRole);
			request.getRequestDispatcher("/WEB-INF/jsp/login-user.jsp").forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String email=request.getParameter("email");
		String password=request.getParameter("password");
		/*String user=request.getParameter("role");
		int userId=Integer.parseInt(user);*/

		List<UserManagement> loginUser=new ArrayList<UserManagement>();
		UserManagement userManagement=new UserManagement();
		Dao dao=new Dao();
		HttpSession session=null;
		try{
			userManagement=dao.loginuser(email);
			/*for (UserManagement userManagement : loginUser) {
				//String name=userManagement.getUserName();
*/				if(email.equals(userManagement.getEmail()) && password.equals(userManagement.getPassword()) && userManagement.getRoleId().equals(LoginUser.Seller)){
					session=request.getSession();
					session.setAttribute("name", userManagement.getUserName());
					response.sendRedirect(request.getContextPath()+"/product-details");
					return;
				}
				else if(email.equals(userManagement.getEmail()) && password.equals(userManagement.getPassword()) && userManagement.getRoleId().equals(LoginUser.Buyer)){
					session=request.getSession();
					session.setAttribute("name", userManagement.getUserName());
					//response.sendRedirect(request.getContextPath()+"/purchase-product");
					response.sendRedirect(request.getContextPath()+"/display-to-buyer");
					return;
				}

			//}
				response.sendRedirect(request.getContextPath()+"/login-user");
				return;

		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

}

				******************* ProductDetails.java ************************
package marketmanagement.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

import javax.print.attribute.standard.PDLOverrideSupported;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.ProductDetail;
import marketmanagement.model.UserManagement;


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


	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id=1;
		List<UserManagement> getUSerList=new ArrayList<UserManagement>();
		Dao dao=new Dao();
		try{
			getUSerList=dao.useralrdyLogin(id);
			request.setAttribute("getUSerList", getUSerList);
			request.getRequestDispatcher("/WEB-INF/jsp/product-details.jsp").forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
	}


	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		PrintWriter out=response.getWriter();

		String productCode=request.getParameter("productCode");
		String productName=request.getParameter("productName");
		String productPrice=request.getParameter("productPrice");
		String productQuntity1=request.getParameter("productQuntity");
		String productDescription=request.getParameter("productDescription");
		String userId1=request.getParameter("user");

		String errMsg=validateData(productCode,productName,productPrice,productQuntity1,productDescription,userId1);

		if(errMsg.length()!=0){
			out.print(errMsg);
			//request.getRequestDispatcher("GetClassInfo").forward(request, response);
			return;
		}
		int productQuntity=Integer.parseInt(productQuntity1);
		int userId=Integer.parseInt(userId1);

		ProductDetail product=new ProductDetail();

		product.setProductCode(productCode);
		product.setProductName(productName);
		product.setProductPrice(productPrice);
		product.setProductQuntity(productQuntity);
		product.setProductDescription(productDescription);
		product.setUserId(userId);

		int status=0;
		Dao dao=new Dao();
		try{
			status=dao.productDetail(product);
			response.sendRedirect(request.getContextPath()+"/product-details");
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
		if(status!=0){
			out.print("Data inserted Successfully");
		}else{
			out.print("Sorry! Data not inserted Successfully");
		}

	}


	private String validateData(String productCode, String productName, String productPrice, String productQuntity1,String productDescription,
			String userId1) {

		String errMsg="";

		boolean nameFormate=Pattern.matches("[A-Z a-z]*", productName);
		boolean validPassword=Pattern.matches("[A-Za-z0-9]*{6,50}", productCode);
		boolean balanceFormate=Pattern.matches("[0-9]*", productPrice);

		if(productName==null || productName.length()==0)
			errMsg=errMsg+"Please Enter the productName";
		else if(productName.length()>=20 )
			errMsg=errMsg+"name length is maximum 20 not more than 20";
		else if(!nameFormate)
			errMsg=errMsg+"name contains only character no any digit are allowed";

		if(productCode==null || productCode.length()==0)
			errMsg=errMsg+"\n Please Enter the productCode";
		else if(!validPassword)
			errMsg=errMsg+"\n Please Enter the valid productCode no special symbol allowed";
		else if(productCode.length()<6 || productCode.length()>=15)
			errMsg=errMsg+"\n Please Enter the productCode minimum 6 or maximum 15 caharacters";

		if(productPrice==null || productPrice.length()==0)
			errMsg=errMsg+"\n Please Enter the productPrice";
		else if(!balanceFormate)
			errMsg=errMsg+"\n Please Enter the only digit no character are allowed in productPrice";

		if(productQuntity1==null || productQuntity1.length()==0)
			errMsg=errMsg+"\n Please Enter the productPrice";
		else if(!balanceFormate)
			errMsg=errMsg+"\n Please Enter the only digit no character are allowed in productQuntity";

		if(productDescription==null || productDescription.length()==0)
			errMsg=errMsg+"\n Please Enter the productDescription";

		if(userId1==null || userId1.length()==0)
			errMsg=errMsg+"\n Please Enter the user";

		return errMsg;
	}

}

				******************* UserRegistration.java ************************

package marketmanagement.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import marketmanagement.dao.Dao;
import marketmanagement.model.RoleMaster;
import marketmanagement.model.UserManagement;


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

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		List<RoleMaster> getUSerRole=new ArrayList<RoleMaster>();
		Dao dao=new Dao();
		try{
			getUSerRole=dao.getUserRole();
			request.setAttribute("getUSerRole", getUSerRole);
			request.getRequestDispatcher("/WEB-INF/jsp/user-registration.jsp").forward(request, response);
		}catch (Exception e) {
			throw new RuntimeException(e);
		}

	}


	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		PrintWriter out=response.getWriter();
		String userName=request.getParameter("userName");
		String email=request.getParameter("email");
		String password=request.getParameter("password");
		String phoneNo=request.getParameter("phoneNo");
		String dateOfBirth=request.getParameter("dateOfBirth");
		String balance=request.getParameter("balance");
		String roleId1=request.getParameter("role");

		String errMsg=validateData(userName,email,password,phoneNo,dateOfBirth,balance,roleId1);

		if(errMsg.length()!=0){
			out.print(errMsg);
			//request.getRequestDispatcher("GetClassInfo").forward(request, response);
			return;
		}

		int roleId=Integer.parseInt(roleId1);

		UserManagement usermngmt=new UserManagement();
		usermngmt.setUserName(userName);
		usermngmt.setEmail(email);
		usermngmt.setPassword(password);
		usermngmt.setPhoneNo(phoneNo);
		usermngmt.setDateOfBirth(dateOfBirth);
		usermngmt.setBalance(balance);
		usermngmt.setRoleId(roleId);

		int status=0;
		Dao dao=new Dao();
		try{
			status=dao.userRegistraton(usermngmt);
			response.sendRedirect(request.getContextPath()+"/user-registration");
		}catch (Exception e) {
			throw new RuntimeException(e);
		}
		if(status!=0){
			//out.print("Data inserted Successfully");
			//System.out.println("Data inserted Successfully");
		}else{
			//out.print("Sorry! Data not inserted Successfully");
			//System.out.println("Sorry! Data not inserted Successfully");
		}

	}


	private String validateData(String userName, String email, String password, String phoneNo, String dateOfBirth,
			String balance,String roleId1) {

		String errMsg="";
		//String bitrhdateFormate="dd/mm/yyyy";
		//String nameFormate="[A-Za-z]";
		//String numberFormate="[0-9]";
		boolean numberFormate=Pattern.matches("[0-9]*", phoneNo);
		boolean nameFormate=Pattern.matches("[A-Z a-z]*", userName);
		boolean bitrhdateFormate=Pattern.matches("[0-3]?[0-9]{1,1}/[0-3]?[0-9]{1,1}/[0-9]{2,4}", dateOfBirth);
		//boolean validEmail=Pattern.matches("/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/", email);
		boolean validEmail=Pattern.matches("[A-Za-z0-9.-_]*@/[A-Za-z]*./[A-Za-z]{2,3}", email);
		//String pass="/^(?=.*/d)(?=.*[a-z])(?=.*[A-Z])/w{6,}$/";
		boolean validPassword=Pattern.matches("[A-Za-z0-9_@$#]*{6,15}", password);
		boolean balanceFormate=Pattern.matches("[0-9]*", balance);

		if(userName==null || userName.length()==0)
			errMsg=errMsg+"Please Enter the name";
		else if(userName.length()>=20 )
			errMsg=errMsg+"name length is maximum 20 not more than 20";
		else if(!nameFormate)
			errMsg=errMsg+"name contains only character no any digit are allowed";

		if(email==null || email.length()==0)
			errMsg=errMsg+"\n Please Enter the email";
		/*else if(!validEmail)
			errMsg=errMsg+"\n Please enter valid email";*/

		if(password==null || password.length()==0)
			errMsg=errMsg+"\n Please Enter the password";
		else if(!validPassword)
			errMsg=errMsg+"\n Please Enter the valid password"+"\n atleast one Uppercase , one lowercase and one digit";
		else if(password.length()<6 || password.length()>=15)
			errMsg=errMsg+"\n Please Enter the password minimum 6 or maximum 15 caharacters";

		if(phoneNo==null || phoneNo.length()==0)
			errMsg=errMsg+"\n Please Enter the MobileNo";
		else if(!numberFormate)
			errMsg=errMsg+"\n Please Enter the only digit no character are allowed";
		else if(phoneNo.length()!=10)
			errMsg=errMsg+"\n mobileNo length is maximum 10 not more than 10";

		if(dateOfBirth==null || dateOfBirth.length()==0)
			errMsg=errMsg+"\n Please Enter the birthdate";
		else if(!bitrhdateFormate)
			errMsg=errMsg+"\n Please Enter the valid birthdate formate valid formate is DD/MM/YYYY";

		if(balance==null || balance.length()==0)
			errMsg=errMsg+"\n Please Enter the MobileNo";
		else if(!balanceFormate)
			errMsg=errMsg+"\n Please Enter the only digit no character are allowed in balance";

		if(roleId1==null || roleId1.length()==0)
			errMsg=errMsg+"\n Please Enter the standard";

		return errMsg;
	}

}