Jsp Vs Servlet

Ant and javac can still be used. Cómo crear un CRUD en Java Web con JSP y Servlet. Developed and taught by well-known author and developer. thanks and regards Mohamed Sadam. They also need a compatible web server with a servlet container, such as Apache Tomcat or Jetty, in order to run. 2 (Old!) • The JSP page accesses beans with jsp:useBean and a scope matching the location of step 4. JSP and servlets are written using Java language, so knowledge of Java is required. The "better" is it's use of inversion of control/dependency injection. Although servlets can respond to many types of requests, they most commonly implement web containers for hosting web applications on web servers and thus qualify as a server-side servlet web API. 0 is JSR 152. JSP vs Servlet. To publish a message use a HTTP POST. JSP, like ASP, provides a simplified and fast mean to generate dynamic web contents. Java Server Pages (JSP) is a technology for creating Web pages that support dynamic content. Each JSP is first compiled into a Servlet before it can be used. No further information is available. You'll interact with servlets and JSPs in ways that help you learn quickly and deeply. Only the first time you run the JSP after it has been changed, it takes a little longer to run because it has to be converted to servlet. It is good start for beginner to learn with these programs. This tutorial will show you how to create a simple Java web application using embedded Tomcat. JSP and servlets are written using Java language, so knowledge of Java is required. Apache Tomcat 5. So that every server can provide that directory structure irrespective of vendor. JavaServer Pages enables Web developers and designers to simply edit HTML pages with special tags for the dynamic, Java portions. 1 is JSR 245. Portlets are managed by a portlet container just like servlet is managed by servlet container. Developed and taught by well-known author and developer. This is not good enough, if the user wants to read the web page based on his input. Step 2:- Compiler compile. Hola que tal, bienvenido a este nuevo artículo, en donde aprenderás cómo crear un CRUD en Java Web con JSP y Servlet. Servlet interface that runs within a Web or application server's servlet engine, servicing client requests forwarded to it through the server. JSP Tutorial. A Controller (in this context, an implementation of HttpServlet) may perform either a forward or a redirect operation at the end of processing a request. Login application using jsp servlet and mysql database Today we are going to create a simple web login application using JSP, servlet and mysql database. The JSP servlets are cached and re-used until the original JSP is modified. Given below is a comparison chart depicting the main points of. In Model-1 architecture web applications are developed by combining both business and presentation logic. In this course, you will learn the basics developing a Basic Todo Management Application using Java Servlets and JSP with Login and Logout functionalities. The documents are formatted using a markup language called HTML (HyperText Markup Language) that supports links to other documents like graphics, audio, and video files etc. A servlet is a Java class implementing the javax. The idea was to leverage the latest language features such as annotations and generics and modernize how Servlets can be written. You will build a Dynamic Website using the Core technologies of Java Web Programming. Using a session, in fact, a client can connect to a server and maintain his state. This tutorial is a guide to installing and configuring Apache Tomcat 6 or 7 for use as a standalone Web server (for development) that supports JSF 2 or servlets and JSP. Includes Eclipse integration. Servlets/JSP The MVC Architecture • Bad JSP design – Many books or articles on Java-based Web frameworks start with this. This is not a full Java bean. It can be thought of as an extension to Servlet because it provides more functionality than servlet such as expression language, JSTL, etc. For every web application we have to maintain WEB-INF folder. Occasionally, the initial HTTP Request Handler in our Java Servlet needs to delegate the Request to another resource. Unless I figure something out I'll just have to use a generic JSP file. Servlet Servletobject (-javafile) Moreover, all the processes that happens in servlet is performed on JSP. The JSP translator is a part of webserver that is responsible to translate the JSP page into servlet. Servlet forward will forward the existing request to another JSP or Servlet, so all the request parameters and attributes will be available to destination servlet. JSP pages can be used in combination with servlets that handle the business logic, the model supported by Java servlet template. Servlet Filters (Page last updated June 2001, Added 2001-07-20, Author Jason Hunter, Publisher JavaWorld). Apache makes implementations of the popular and well-reputed Java servlet Tomcat available for use for absolutely free. When a page is dynamic, it continually updates the information, at the same time the web page is being displayed to the client. xml deployment descriptor The web. 0 is JSR 341. Learn MVC in JSP Login App using Servlet Login app using JSP Benefits of Taking This JSP/Servlets Course JSP Servlets is one of the most popular asset for modern web development industry. Only the first time you run the JSP after it has been changed, it takes a little longer to run because it has to be converted to servlet. JSF and Facelet are. Servlets provide a component-based, platform-independent method for building Webbased applications, without the performance limitations of CGI programs. Object extended by javax. Contract pricing display is unavailable at the moment. The Java Programmer bootcamp offers a task-oriented, cost effective approach to learning Java technology. net ???? guys i learned Java Core and i learned jsp a lil bit. Java server pages is the J2EE technology for generating dynamic web content. The idea was to leverage the latest language features such as annotations and generics and modernize how Servlets can be written. There are of course more involved application frameworks like Struts. I am learning JavaScript and want to learn some server side. Difference Between Servlet and JSP. For example, if you have a JSP form, and it has a post action, that post action should be a servlet. 0 as soon as possible. Difference Between Servlet and JSP. Servlet forward will forward the existing request to another JSP or Servlet, so all the request parameters and attributes will be available to destination servlet. Great hosting offer for jsp and serlvet hosting All those environment issues dealing with compiling and executing servlets come into. Configuring the web. Servlet specification defines a standard structure for web-application. JSF 2 • Servlets and JSP (JavaServer Pages) – Original, widely-deployed standard – Used by google. In the case of websites, JSP scripts typically serve as HTML templates and, under best practices, the major code segments involve references to backend JavaBeans. The source for the login jsp page is presented below. This is the first article in the Java Web Applications tutorial and you will learn about core concepts of web application and how we can use Eclipse to create our first web application. 0 and JSP 2. This article aims to highlight the main points pertaining to jsp vs servlet along with taking care of the definitions of servlet and JSP, the features of jsp servlets, the need for JSP and servlets, etc. (2) Then, you will get to see the result shown in above. x is available for download from the archives. JspPage interface. The industry itself is divided, JSP/J2EE has its advantages (first being truly free and open source) and many big projects are still being developed in JSP (with the Java technology itself maturing). net ???? guys i learned Java Core and i learned jsp a lil bit. First, we have taglib definition at the top that prefixes to the libraries to be used. This is not a full Java bean. Having more than one servlet in an application is common. What is the difference between the request attribute and request parameter? Request parameters are the result of submitting an HTTP request with a query string that specifies the name/value pairs, or of submitting an HTML form that specifies the name/value pairs. JSP is a way to have something look mostly like HTML interact with servlets. Servlets have access to the entire family of Java APIs, including the JDBC API to access enterprise databases. The is the name for your servlet, by which it is known to Tomcat. Join Ketkee Aryamane for an in-depth discussion in this video, Welcome, part of Java EE: Servlets and JavaServer Pages (JSP). But, is important to understand, that the session is maintained in different ways and, in theory, for different scopes. can anyone tell me which one is better and strong at present? is it PHP or java technologies like JSP, SERVLET or JSF hahah or ASP. Spring is more like a structured way to use Servlets and JSP. Spring Boot comes with two powerful plugins: Spring Boot operates on servlet 3. JavaServer Pages (JSP) is a Java JSP+Servlet are best suited for service-oriented applications and need to control function of presentation through dispatching requests. 2 tutorial. Request Dispatch When a servlet does a redirect, it's like asking the client to call someone else instead. , Tomcat 7) - For older. Ajax vs Java: AJAX Insert Form + Jsp Servlet vs SQL Server [Eclipse] By Admin at 8:28:00 PM Ajax , Jsp & Servlet No comments -Tạo project File > New File > Other. JSPs have the same advantages and disadvantages as servlets when compared to applets. The industry itself is divided, JSP/J2EE has its advantages (first being truly free and open source) and many big projects are still being developed in JSP (with the Java technology itself maturing). Unauthorized entry is prohibited and subject to prosecution under Title 18 of the U. Comparatively it is slower than Servlets as it takes a lot of time to compile. JSP question bank & quiz comprising samples, examples, code, output & theory based questions from. A Servlet & An Application Server: TomCat vs. Note that you have to run jsp file, not servlet. Users of this site with interest in knowledge and practice on current tax law are encouraged to access Link and Learn Taxes. At the end of the day a JSP gets turned into a servlet to run. Brogden: Design and Implement Servlets, JSPs, and EJBs for IBM WebSphere Application Server (IBM Redbook) (2000) by IBM Redbooks. With JSP, if the code inside a page gets too big, or if you want to use it elsewhere, you can cut it out, make it into a Java class, and invoke it from anywhere in your application (even not from a page). It allows you to mix static HTML with dynamically generated HTML - in the way that the business logic and the presentation. Hello Mathew, JSP has the advantage of seperating the presentation layer and business logic, and hence convinient at development. Servlet JSP; A servlet is a server-side program and written purely on Java. The Servlet API is one of the most used API, if not the most used API of the Java EE Platform! It was revised for Java EE 7, Servlet 3. Its the job. includes the content of a resource (servlet, JSP page, HTML file) in the response How to get an Object of RequestDispatcher getRequestDispatcher() method of ServletRequest returns the object of RequestDispatcher. The servlet engine then loads the servlet class (using a class loader) and executes it to create dynamic HTML to be sent to the browser, as shown in Figure 1. Contribute to developer-vs/jsp_servlet_todo_list_application development by creating an account on GitHub. 0 as soon as possible. A JSP technically gets converted to a servlet but it looks more like PHP files where you embed the java into HTML. I feel that if I skipped learning JSP and servlets I would missed a lot of important concepts that will surely help me in the future. During the time when static content was no longer enough and more developers began looking for ways to generate dynamic content, Java released the Servlet which is more like a program that is run on the server to provide dynamic pages. JSP pages are precompiled for efficient server processing. JSP vs Servlet. In all respects except one, this HTML looks just like normal HTML, follows all the same syntax rules, and is simply "passed through" to the client by the servlet created to handle the page. Servlet interface that runs within a Web or application server's servlet engine, servicing client requests forwarded to it through the server. As a Unix administrator you can avoid supporting much of the applications that run on your servers and contain yourself with just the Unix aspects, but as I personally feel the Unix admin role itself is diminishing (no networking, less volume manager stuff, etc) you have to obtain additional skills, my thoughts are that you need to start to look after some. 0 and JSP 2. Online Store for virtualisation of your desktop, servers, data centers and cloud. but it is executed on the server side). 0 and JSP 2. From a logical point of view, a Servlet/JSP session is similar to an EJB session. Prerequisites. For verizon. Review of HTTP. To build the servlet we build the package target using Maven. The basic Servlet package defines Java objects to represent the servlet requests and responses. In JSP's life cycle, after a jsp is translated into a servlet, it behaves in the same way as a servlet. Learn the fundamentals of JDBC and using the different interfaces in the JDBC API. JSP stands for Java Server Pages, it helps the developer to create dynamic and data-driven web pages for XML and HTML. Servlets vs JSP:-Servlets and Java Server Pages are complementary APIs, both providing a means for generating dynamic Web content. JSP somewhat slower than servlet. Servlet's mapping URLs are defined in element of web. However with redirect, browser sends new request to specified URL, so old request parameters and attributes will not be available to destination resource. Page scope is denoted by javax. CGI Scalable, uses Lightweight threads: Doesn't start new process for each request, Initialized once and persists in memory for multiple requests, cached. In this case, the client is the browser, not - Selection from Head First Servlets and JSP, 2nd Edition [Book]. 10 Which Model ?. Given below is a comparison chart depicting the main points of. The is the compiled file of your servlet without the. A HTTP Servlet runs under the HTTP protocol. Using the JSP compiler, WebLogic Server converts the JSP into a servlet class that implements the javax. Servlet interface that runs within a Web or application server's servlet engine, servicing client requests forwarded to it through the server. Java has been a well known name when it comes to software that are used in web development. Servlets are predominantly used in implementing web applications that generate dynamic web pages. JSP, Servlets, and MySQL (2001) by David Harms: Special Edition Using Java Server Pages and Servlets (2000) by Mark Wutka: Java Developer's Guide to Servlets and Jsp (2000) by William B. - Servlet Java J2EE - JSP Java J2EE - Java 11 - Java 10 - Vaadin Framework - Maven Framework - Scala Framework - Spring Boot Java - Groovy Framework - OpenXava Framework - Java Play Framework - Apache Kafka Framework - Rust Programming; JS Frameworks. 0 Specification 110 JSP 110 JavaBeans 110 Custom Tags and JSP Fragments 110 Expression Language 110 JSP Life Cycle 111 The Difference Between Servlets and JSP 112 JSP Syntax and Semantics 116 Elements and Template Data 116 Two Types of Syntax 116 Scripting Elements 117. Step 1 :- Web Container translates JSP code into a servlet class source(. Servlets can be generated automatically from Java Server Pages (JSP) by the JavaServer Pages compiler. Every time you edit, save and reload a JSP page, the server's JSP compiler generates Java servlet code and compiles it into a servlet. Web container is responsible for managing execution of servlets and JSP pages for Java EE application. As a lazy dimwit, I prefer using grails, which uses spring but sets up all the conventions for me. JSP Versus SERVLETS It is been seen that JSP and Servlets provides dynamic content to a web-page, but in a different way. Rossen Stoyanchev talks about five common use cases in web application development and explores the impact of building on Servlet and Reactive web application stacks. The following programs have designated OCULUS as their official and public database for its documents and records. JSP is an interface on top of Servlets. Developers can build web applications using the Servlet API to interact with the request/response workflow. JavaServer Pages (JSP) is a Java JSP+Servlet are best suited for service-oriented applications and need to control function of presentation through dispatching requests. Java Servlet is the foundation web specification in the Java Enterprise Platform. Servlets and Java Server Pages are complementary APIs, both providing a means for generating dynamic Web content. foo than in your servlet dispatch request to your jsp lets say your jsp name is index. JAVASCRIPT : Javascript is a dynamic computer programming language. Practical implementation of why we need JSP In this video we will see : - Example of JSP - Why we need JSP - HTML tags - Run project - Why to go for JSP over Servlet - What is JSP - Create JSP. Apache Tomcat 5. The is the name for your servlet, by which it is known to Tomcat. A forward is performed internally by the servlet, we can only forward request to another servlet or a JSP file. The JSP translator is a part of webserver that is responsible to translate the JSP page into servlet. Each servlet has got their own inside containing email-id. Java Server Page (JSP) is a technology developed by Sun Microsystems, back in 1999, and is intended for creating dynamically generated web pages. If valid, the servlet will Add the bean as an attribute to the session. HTTP servlets can read HTTP headers and write HTML coding to deliver a response to a browser client. You can watch our Java and J2EE design pattern videos on various topics like Model view controller, front controller, intercepting filter, factory patterns and lot more. Passing a String array from servlet to. Cómo crear un CRUD en Java Web con JSP y Servlet. Using JSP, you can assemble input. With Safari, you learn the way you learn best. If you write servlets, you need to know Java to write the servlet body, and HTML to write the output. Now I am assigned a servlet or it can be done without using a servlet, just by using classes. But in Servlet all the programs are compiled into the Java bytecode which is then run in the Java virtual machine. Note that you have to run jsp file, not servlet. The difference in emphasis is that JSP should be mostly HTML, with a little bit of java code. Servlets have access to the entire family of Java APIs, including the JDBC API to access enterprise databases. Comparatively it is slower than Servlets as it takes a lot of time to compile. This tutorial is a guide to installing and configuring Apache Tomcat 6 or 7 for use as a standalone Web server (for development) that supports JSF 2 or servlets and JSP. Get Started. Both static and dynamic content can be generated by Portlets and Servlets. Skip to main content. A servlet is a Java class used to extend the capabilities of a server. Still there are various differences between them which I am sharing below. Java Servlet vs. please not same example as above Mangoes. javahelp) submitted 5 years ago * by Sarks Nooblet Brewer. A servlet is a Java class implementing the javax. Below is the table of comparison between the two:. Servlets Vs Portlets. At the server side, redirect the response to the jsp page and append the parameters directly in the url as the following:. JSP Tutorial. Java Servlets are the foundation of web application development in Java EE. 0 as soon as possible. • Servlet generates the dynamic content. For every servlet, you need a element in the web. Practical implementation of why we need JSP In this video we will see : - Example of JSP - Why we need JSP - HTML tags - Run project - Why to go for JSP over Servlet - What is JSP - Create JSP. Only the first time you run the JSP after it has been changed, it takes a little longer to run because it has to be converted to servlet. Servlet interface that runs within a Web or application server's servlet engine, servicing client requests forwarded to it through the server. thanks and regards Mohamed Sadam. Servlet and JSP Tutorial: Advantages of JSP Over Servlets. Mapping of REST to JMS. The page object represents the generated servlet instance itself, i. You will build a Dynamic Website using the Core technologies of Java Web Programming. i am currently beginning to do web applications in java and i am using jsp with java beans. Get Started. where as in jsp's life cycle first. Java Servlets are an efficient and powerful solution for creating dynamic content for the Web. Accede gratis al Curso de Java EE y suscribete al canal de Youtube. In JSP's life cycle, after a jsp is translated into a servlet, it behaves in the same way as a servlet. JSP scripts, by contrast, are an arbitrary mix of HTML and code. The second way of passing data from servlet to jsp is through redirecting the response to the appropriate jsp and appending the attributes in the URL as query string. net email through Yahoo, access your mail by going to verizon. Unauthorized entry is prohibited and subject to prosecution under Title 18 of the U. 0 and JSP 2. can anyone tell me which one is better and strong at present? is it PHP or java technologies like JSP, SERVLET or JSF hahah or ASP. other server side technologies. JDT used to compile JSP pages - The Eclipse JDT Java compiler is now used to perform JSP java source code compilation. In JSP's life cycle, after a jsp is translated into a servlet, it behaves in the same way as a servlet. Java servlets make many Web. Extract the data from the beans. JSP supports the so-called taglibs which are backed by pieces of Java code with which you can control the page flow and/or output dynamically. Developers can build web applications using the Servlet API to interact with the request/response workflow. During the time when static content was no longer enough and more developers began looking for ways to generate dynamic content, Java released the Servlet which is more like a program that is run on the server to provide dynamic pages. xml it can be specified under tags and not under tags. I'm curious too. As a lazy dimwit, I prefer using grails, which uses spring but sets up all the conventions for me. It is lightweight and most commonly used as a part of web pages, whose implementatio. Occasionally, the initial HTTP Request Handler in our Java Servlet needs to delegate the Request to another resource. We'll use. jsp' is converted into a '. xml, hence it is independent of servlet and accessible from whole app. Servlets and Java Server Pages are complementary APIs, both providing a means for generating dynamic Web content. It's important to understand the difference between these two cases, in particular with respect to browser reloads of web pages. Servlets can run on any Servlet enabled web server. We’ll look at how to parse XML files, how to handle sessions and keep track of user interaction using session management. A servlet is the name for a chunk of Java code that serves a request. If valid, the servlet will Add the bean as an attribute to the session. where as in jsp's life cycle first. and its response should be display on division tag of middlebody. JHTML is the extension for Dynamo Server Pages, an older technology that does the same thing as JSP. Below is the topmost comparison between JSP vs. Servlet is a technology which is used to create a web application. Having more than one servlet in an application is common. Difference between GenericServlet vs HttpServlet in Servlet JSP - J2EE question Difference between GenericServlet and HttpServlet is one of the classic Servlet Interview Question , asked on many Servlet and JSP Interviews on 2 to 4 years experience developers. JSP Tutorial. For example, if you have a JSP form, and it has a post action, that post action should be a servlet. Passing Parameter Using Html Form in Servlet March 02, 2014 by Mukesh Kumar at 3:47 pm The parameters are the way in which a user can send information to the Http Server. But JSP makes it easier, and you can use WYSIWYG tools like Dreamweaver to make a jsp page. JspPage interface. Configuring & Using Apache Tomcat A Tutorial on Installing, Configuring, and Using Tomcat for JSF or Servlet and JSP Development. Released in 1999 by Sun Microsystems, JSP is similar to PHP and ASP, but it uses the Java programming language. A reasonably complicated servlet that ran various db queries, did some business logic and displayed the results vs 2. It is good start for beginner to learn with these programs. This is the first article in the Java Web Applications tutorial and you will learn about core concepts of web application and how we can use Eclipse to create our first web application. The Servlet API is one of the most used API, if not the most used API of the Java EE Platform! It was revised for Java EE 7, Servlet 3. The page object represents the generated servlet instance itself, i. Contract pricing display is unavailable at the moment. In Servlet, we can override the service() method. Stay ahead with the world's most comprehensive technology and business learning platform. The best way is, of course to get rid of JSP pages and use Facelets exclusively. A Java enabled browser can be used to view the web page containing the applet. 1 is JSR 245. What language is better for server side? Jsp vs php vs nide. This means that JSP can play a part in the simplest applications to the most complex and demanding. Portlets are managed by a portlet container just like servlet is managed by servlet container. In this tutorial you will create a school schedule Web application. The Java structure offers a technique to develop fast, large and independent web applications. class extension. JSP vs Servlet Comparison Table. Difference Between Servlet and JSP. Forward a forward is performed internally by the servlet. Servlets vs JSP:-Servlets and Java Server Pages are complementary APIs, both providing a means for generating dynamic Web content. When a page is dynamic, it continually updates the information, at the same time the web page is being displayed to the client. Servlets | Servlet Tutorial. The second way of passing data from servlet to jsp is through redirecting the response to the appropriate jsp and appending the attributes in the URL as query string. JSP page scope The page scope restricts the scpoe and lifetime of attributes to the same page where it was created. 1 (JSR 245). JSP Hello World Example using Eclipse IDE and Tomcat web server - SrcCodes Search for:. its model: number is 42-1008. foo than in your servlet dispatch request to your jsp lets say your jsp name is index. net email through Yahoo, access your mail by going to verizon. Note that the src attribute of the captcha image is "/captcha-demos/simple". It favors convention over configuration, is extensible using a plugin architecture, and ships with plugins to support REST, AJAX and JSON. JSP Implicit Objects JSP Implicit Objects are the Java objects. forward() vs sendRedirect() vs include() by Hussein Terek · October 11, 2017 It is a common practice that a controller redirects to another resource after processing a request, the resource could be either a view which displays the result of processing or even another controller which needs to do further processing on the request. The Servlet Container. Comparatively it is slower than Servlets as it takes a lot of time to compile. This compiler loads source dependencies from the container classloader. Notifications about disabled Java and restoring prompts. JavaServer Page (JSP) is Java's answer to the popular Microsoft's Active Server Pages (ASP). Iam developeing jsp page in eclipse, my project is i wants to show some datas in tree structure, for that i used jquery now its fine but without internet it is not working, by useing some sites it takeing 2 js files and 2css files. Java ha sido un nombre muy conocido en el mundo cuando se trata de software utilizado en el desarrollo web. So practically its impossible to create / pradict. JSP is still easier than Servlets. See how to get ServletContext in Servlet JSP and Struts to find out different ways of getting ServletContext in J2EE application. Servlet mapping specifies the web container of which java servlet should be invoked for a url given by client. However with redirect, browser sends new request to specified URL, so old request parameters and attributes will not be available to destination resource. HTTP servlets can read HTTP headers and write HTML coding to deliver a response to a browser client. This tutorial shows you how to create and execute a simple registration form using jsp and servlet, lets start the tutorial by creating a registration page in jsp. Because JSPs eventually are compiled into Java servlets, you can do as much with JSPs as you can do with Java servlets. But there is only a small disadvantage of jsp over servlet. The scope of an object describes how widely it's available and who has access to it. In Servlet, we can override the service() method. Finally, the Servlet will check the validity of the user (by reading the valid attribute of the bean) and redirect to the appropriate JSP. Java Servlet vs. SSI is a widely-supported technology for including externally-defined pieces into a static Web page. Here's an example of how to forward from a servlet to a JSP in your J2EE code. A Java servlet is a Java software component that extends the capabilities of a server. In page X, we have forward tag. 0 Specification 110 JSP 110 JavaBeans 110 Custom Tags and JSP Fragments 110 Expression Language 110 JSP Life Cycle 111 The Difference Between Servlets and JSP 112 JSP Syntax and Semantics 116 Elements and Template Data 116 Two Types of Syntax 116 Scripting Elements 117. Its role is to manage the HTTP Request and generate an HTTP Response. Get a high-level view of the progression of presentation-layer technologies in the Java EE platform. Step 3:– The classloader load. Redirect vs. 1) When should I use jsp as opposed to a servlet and what are the advantages of using one as opposed to the other? It seems to me that servlets are more usefull because they have both the doget and dopost methods and therefore, one servlet can perform multiple tasks. JSP and Servlet Tutorial: Handling the Client Request -- Form Data Only became part of the servlet/JSP API in Servlet version 3. AccessPlus Session Expired Your session has expired. After servlet is loaded, to handle a new request it simply creates a new thread and runs service method of servlet. you must be 19 years of age to purchase alcohol. In this section we will describe the Servlet and JSP. A Servlet & An Application Server: TomCat vs. Servlets should be used for any backend processing. Only the first time you run the JSP after it has been changed, it takes a little longer to run because it has to be converted to servlet. 0 Vs Spring Framework. But JSP makes it easier, and you can use WYSIWYG tools like Dreamweaver to make a jsp page.