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JudyYes, JSP (JavaServer Pages) and Servlets can be used together in a web application. Servlets handle the business logic and processing of requests, while JSP is used to create the user interface and generate dynamic content. Servlets can interact with JSP pages to pass data and control the flow of the application.
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What are the advantages and disadvantages of JSP?
Advantages of JSP 1. HTML friendly simple and easy language and tags. 2. Supports Java Code. 3. Supports standard Web site development tools. Disadvantages of JSP 1. As JSP pages are translated to servlets and compiled, it is difficult to trace errors occurred in JSP pages. 2. JSP pages require double the disk space to hold the JSP page. 3. JSP pages require more time when accessed for the first time as they are to be compiled on the server.
How do you create an address book using jsp and store all the information?
To create an address book using JSP, you can create a form to input contact information like name, email, phone number, etc. When the form is submitted, you can handle the data in a servlet and store it in a database like MySQL using JDBC. Then, you can retrieve and display this information in the JSP using Java servlets.
What is servlet context?
The ServletContext is an object provided by the servlet container that allows servlets to communicate with the container. It represents the configuration and environment of a web application and provides access to resources such as parameters, attributes, and initialization parameters. Servlets can use the ServletContext to perform tasks like accessing resources, logging events, and managing session persistence.
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.
Set and get session attributes syntax in servlets and java script?
Setting and getting session attributes is fairly easy. It is the same in both Servlets and JSPs with one exception. In a JSP, you already have access to the session object, and you do not have to declare it. In a Servlet, you must get the session like this: javax.servlet.http.HttpSession session = request.getSession(); Once you have done that, you can set a session object like this: session.setAttribute("name","value"); To retrieve the value, do this: String foo = (String) session.getAttribute("name"); A couple of things to keep in mind: * The second parameter in the setAttribute method is an Object, not a String. When you retrieve the value, you have to cast it. In the example above, I am casting it to a String. * If you try to perform a getAttribute on a session attribute that does not exist, or was not set, it will return a null. * Session attributes are not available using JavaScript. You can not set or get an attribute in JavaScript. * You do NOT need to do the 'session = request.getSession() in a JSP. It is only necessary in a Servlet.
