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JSP and servlets are used in when you are building a website that provides a server sided service, for example connecting to a database is a service. == == JSP/Servlets are java code that perform the backend operations for web pages. Such servlets run in a java container, such as JBoss or Tomcat. Where you would use these would be in a web-based environment where you wanted to run the backend on Java, as opposed to PHP, Perl, etc. As an example, eBay is run by JSP/Servlet technology. However, JSP/Servlet technology is much more complicated than scripting languages, but well worth learning.
What else can I help you with?
How can you move the data from servlet to jsp?
To move data from a servlet to a JSP, you can use the request object to set attributes. You can call request.setAttribute("attributeName", data) in the servlet to store the data. Then, use request.getAttribute("attributeName") in the JSP to access that data. Finally, forward the request to the JSP using a RequestDispatcher, like request.getRequestDispatcher("yourPage.jsp").forward(request, response).
How do you dynamically identify the jsp in servlet?
You can dynamically identify the JSP file in a servlet by using the request URL or request parameters to determine which JSP to forward the request to. You can also store necessary information in session attributes or external configurations to help determine the appropriate JSP to display. Finally, you can use a servlet mapping or URL pattern to route requests to different JSP files based on the URL.
How to retrieve data from jsp to servlet?
To retrieve data from a JSP to a servlet, you can use form elements in your JSP to collect user input and submit it to the servlet. When creating the form, ensure to set the action attribute to the servlet's URL and the method attribute to either GET or POST. In the servlet, you can access the submitted data using the request.getParameter("parameterName") method, where "parameterName" corresponds to the name attribute of the form input elements. This allows you to process the data as needed in your servlet.
Which one is faster servlet OR jsp?
Servlet is more faster than JSP, but JSP is more convenient than Servlet and JSP is clearly superior, shorter, simple and easier to use. JSP can be perceived as Java in HTML code. JSP require no explicit compilation as like servlets and can keep in the web application server as HTML file. The web application server in turn compile the java code in JSP and load it in its library for future execution. Servlet can be perceived as HTML in Java code. The servlet is the class file, which would be loaded in the web application server as a program. The program output will be directed to the outstream object which in turn direct to the client as HTML elements.
What is the use of Servlet in java?
Java Servlet is used for Server Side programming for developing Web Applications. It easily employs Database Connectivity. We can also use JSP however it cannot replace a Java Servlet.
Why should you use PHP and not JSP?
Firstly, this is wrong question. The right one would be WHEN should you use PHP, not JSP? or, WHEN should you use PHP and WHEN JSP?
When do you use JSPs as opposed to Servlets?
JSPs and Servlets can be used interchangeably for the most part. In fact, when a JSP is compiled, it is actually turned into a servlet! That being said, there are some guidelines for using servlets over JSPs or vice versa. Here are a couple of examples, but by no means a complete list: Typically, you would use a JSP to display dynamic data, or a form. A Servlet is usually what you would want to use to process a post or a get, especially considering the method that is called when you call a servlet (either doGet or doPost). For more information on this, here is a good article on Servlet and JSP Best Practices: http:/java.sun.com/developer/technicalArticles/javaserverpages/servlets_jsp
How do you create controller for a jsp page?
To create a controller for a JSP page, you typically use a servlet that handles incoming HTTP requests. This servlet processes the request, interacts with any necessary business logic or data models, and then forwards the request and relevant data to the JSP page using a RequestDispatcher. You can set attributes in the request scope to pass data to the JSP, and finally, return the response by calling request.getRequestDispatcher("yourPage.jsp").forward(request, response);. This separation of concerns helps maintain a clear architecture between the presentation layer and business logic.
Are you have project java have jsp plus jdbc plus swing?
No. JSP and Swings are two contrasting Technologies and cannot be used in the same application. And - JDBC can be used with both types of applications that use either JSP or Swings
Why business logic written using servlets not in jsp?
It is usually done for two reasons: 1. For security purposes - No one can see the code inside a servlet but much of the code inside a JSP can be found out by right clicking on the web page and doing a "View Source" 2. There are only one or two Servlets in any application but there may be dozens of JSP's. if you code the business logic in a JSP, then you would have to replicate the same in all the JSP's where you want this feature. Instead if you place this logic inside the servlet, it is easier for re-use. Instead of copy pasting the code in multiple places, you can place the contents in one single place.
What is JSP web language?
Java Server Page is a standard Java extension that is defined on top of the servlet Extensions. The goal of JSP is the simplified creation and management of dynamic Web pages. JSPs are secure, platform-independent, and best of all, make use of Java as a server-side scripting language.
What are jsp actions?
JSP actions are XML tags that direct the server to use existing components or control the behavior of the JSP engine. JSP Actions consist of a typical (XML-based) prefix of "jsp" followed by a colon, followed by the action name followed by one or more attribute parameters. There are six JSP Actions: < jsp : include / > < jsp : forward / > < jsp : plugin / > < jsp : usebean / > < jsp : setProperty / > < jsp : getProperty / >
