Web Technology

Short Answer In Java, exception handling is a way to deal with errors so your program doesn’t just crash. We use try, catch, and finally blocks to do this. In a try block, we put code that might cause an error. A catch block catches the error and lets you handle it, like telling the … Read more

Short Answer In JSP, you can run into different types of errors when your web page doesn’t work right. These errors are usually about the code not being correct or problems on the server. The main types are syntax errors, runtime errors, and logical errors. Syntax errors happen when the code is written wrong, like … Read more

Short Answer Declaring an array in JSP is similar to how you do it in Java. You can use scriptlets or declarations. In a scriptlet, you put Java code inside <% %> tags. For example, <% String[] colors = {"White", "Blue", "Black"}; %> creates an array of colors. You can also declare arrays in declarations … Read more

Short Answer In JSP, you can declare methods to organize your code better and reuse code easily. To declare a method, you use the declaration tag <%! %>. This tag lets you write methods that are part of the JSP page’s servlet class. Once declared, you can call these methods anywhere in your JSP page. … Read more

Short Answer Declaring a variable in JSP is quite simple. You can do it in two main ways: 1). using scriptlets or 2). using declarations. In scriptlets, you write Java code inside <% %> tags. For example, <% int number = 10; %> declares an integer variable named number with a value of 10. In … Read more

Short Answer In JSP, implicit objects are special objects that the JSP container provides automatically, so you don’t have to create them yourself. These objects help you manage information about requests, responses, and the server environment easily. Some of the main implicit objects include request, response, session, application, out, pageContext, config, and exception. Each of … Read more

Short Answer In JSP, request and response objects play a big role in talking between the browser and the web server. The request object carries data from the browser to the server, like what you type into a form. The response object carries data back from the server to your browser, like a web page. … Read more

Short Answer Accessing a database from a JSP page lets you show, change, and manage data on your web page. You do this by using JDBC, a Java tool that connects to the database. First, you add the JDBC driver to your project. Then, in your JSP page, you write Java code inside scriptlets. This … Read more

Short Answer JSP, or JavaServer Pages, is a technology that helps create dynamic web pages. The architecture of JSP includes JSP pages, a JSP container, and web servers. When a user asks for a JSP page, the server uses the JSP container to turn the page into a Java servlet. This process helps JSP run … Read more