WebProgram to Study PDF

417Comp-3 Enterprise Application Development Online programs for HTML, JSP & Servlet Download anyone of the Web Servers from the list in of NetBeans. Recommended is Payara Web Server. Exercise: 1 Write an HTML program of Welcome. Insert a new file by right-click on project and...

417Comp-3 Enterprise Application Development Online programs for HTML, JSP & Servlet Download anyone of the Web Servers from the list in of NetBeans. Recommended is Payara Web Server. Exercise: 1 Write an HTML program of Welcome. Insert a new file by right-click on project and New → HTML. File Name: NewWelcome.html My First HTML Program WELCOME TO HTML PROGRAMMING Exercise: 2 Write a SERVLET program of Welcome. Insert a new file by right-click on project and New → SERVLET. Servlet File Name : myCalc.java import java.io.IOException; import java.io.PrintWriter; import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; import jakarta.servlet.http.HttpServletResponse; @WebServlet(urlPatterns = {"/myCalc"}) public class myCalc extends HttpServlet { private String message; public void init() throws ServletException{ message = "Hello Servlet World!"; } protected void processRequest(HttpServletRequest request, HttpServletResponse response)  throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("" + message + ""); out.close(); } public void destroy(){ } } Exercise: 3 Write a JSP program for arithmetic calculations. File Name: UserLogin.html Login Screen Enter your Credentials Name : Password: Servlet File Name: CheckPass.java import java.io.IOException; import java.io.PrintWriter; import java.io.*; import jakarta.servlet.*; import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; import jakarta.servlet.http.HttpServletResponse; @WebServlet(urlPatterns = {"/CheckPass"}) public class CheckPass extends HttpServlet {  protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); String n = request.getParameter("userName"); String p = request.getParameter("userPass"); if(p.equals("servlet")){ RequestDispatcher rd = request.getRequestDispatcher("myCalc"); rd.forward(request, response); } else{ out.print("Sorry User Name or Password Error!"); RequestDispatcher rd=request.getRequestDispatcher("UserLogin.html"); rd.include(request, response); } } } Exercise: 4 Write a JSP program for arithmetic calculations. File Name: ArithCalc.html EAD Registration Form Calculation Form First Number Second Number JSP File Name: myNCalc.jsp JSP Page Calculation! The Arithmetic Calculations Sum : Sub : Mul : Div : Mod : Exercise: 5 Write a JSP program to read the names as parameters. File Name: NamePara.html Servlet Parameter Reading Enter your name First Name: Second Name: Third Name: Servlet File Name: ParamRead.java import java.io.IOException; import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; import jakarta.servlet.http.HttpServletResponse; import java.io.PrintWriter; @WebServlet(urlPatterns = {"/ParamRead"}) public class ParamRead extends HttpServlet { private static final long serialVersionUID = 1L; protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String param1 = request.getParameter("Param1"); String param2 = request.getParameter("Param2"); String param3 = request.getParameter("Param3");  PrintWriter out = response.getWriter(); out.println(" First Name :"+param1+""); out.println(" Second Name :"+param2+""); out.println(" Third Name :"+param3+""); response.getWriter().println("Parameters received successfully!"); out.close(); } }