What is JSP and how it works?

What is JSP and how it works?

The JSP engine compiles the servlet into an executable class and forwards the original request to a servlet engine. A part of the web server called the servlet engine loads the Servlet class and executes it. During execution, the servlet produces an output in HTML format.

How are JSP pages handled?

In JSP, there are two ways to perform exception handling: By errorPage and isErrorPage attributes of page directive. By element in web. xml file….There are 4 files:

  1. web. xml file for specifying the error-page element.
  2. index. jsp for input values.
  3. process.
  4. error.

How are JSP pages compiled?

When a request is mapped to a JSP page, the web container first checks whether the JSP page’s servlet is older than the JSP page. If the servlet is older, the web container translates the JSP page into a servlet class and compiles the class.

How the JSP is processed explain each step in detail?

  1. Step 1: The client navigates to a file ending with the .
  2. Step 2: If the compiled version of JSP exists in the web server, it returns the file.
  3. Step 3: The JSP Engine loads the JSP file and translates the JSP to Servlet(Java code).
  4. Step 4: The JSP engine compiles the Servlet to an executable .
  5. Step 5: The .

Do JSP files need to be compiled?

As long as it is JSP, you dont need to compile/convert. The application server automatically translates your JSP into corresponding servlet, a Java file (on the first hit to the JSP), and then compiles it to class file.

Can we use javaScript in JSP?

Yes, We can use javaScript with JSP page. As we know that javaScript is a Client-side script and JSP is a Server-side so we can attach a form validation to a JSP page to redirect HTML page and javaScript content.

Is JSP or HTML better?

JSP provides a dynamic interface for the continuously changing data and also it dynamically invokes the server actions. HTML provides a means to give a detailed account of the structure of text-based information in a document. JSP generated dynamic web pages only. Whereas Html generated static web pages only.

Which is better JSP or PHP?

JSP: JSP stands for Java Server Pages, JSP is a server-side technology that makes a difference in making an energetic web application….Difference Between JSP and PHP.

JSP PHP
Common to JSPs since they are changed over to Java classes. Way less characteristic than JSP.

What are the two phases of the JSP page life cycle?

Following steps are involved in the JSP life cycle: Translation of JSP page to Servlet. Compilation of JSP page(Compilation of JSP into test. java)

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