Advanced Java Programming · Unit 6
Web Programming with Servlets and JSP
Exam-focused notes for Web Programming with Servlets and JSP (Advanced Java Programming, BIT401): what the TU syllabus asks and how it has actually been tested, with 5 solved past questions from this unit.
What this unit covers
- Servlet architecture and lifecycle
- Methods of writing servlet programs
- Differences between JSP and servlets
- JSP tags and directives
- Scriptlets and JSP access models
- JSP implicit objects and their purposes
- HTML form processing with JSP
- Servlet APIs
- Request and response handling
JSP implicit objects and their purposes
What are the purposes of JSP implicit objects? Describe the methods of writing servlet program with example.[10]
JSP implicit objects are pre-defined objects automatically available in JSP pages without explicit declaration. Their main purposes are: - request object: Captures HTTP request parameters, headers, and cookies sent by the client - Purpose: Access form data,...
Full solved answer →Servlet APIs
Discuss about any four servlet APIs. Design a form in JSP to take the necessary information about an employee and when the user click submit button, it will be displayed in second page.[10]
The HttpServletRequest object contains the request sent by the client to the server. Key methods include: - getParameter(String name) - retrieves a single parameter value from the request - getParameterValues(String name) - retrieves multiple values for the...
Full solved answer →Scriptlets and JSP access models
Define scriptlets. Discuss about JSP access models. [5]
Scriptlets are blocks of Java code embedded directly within JSP (JavaServer Pages) documents. They are enclosed within <% ... % tags and allow developers to write Java logic that executes on the server side during page processing. Syntax: Scriptlets have fu...
Full solved answer →JSP tags and directives
What are the various tags used in writing JSP programs? How HTML forms can be processed using JSP? Explain with example.[10]
JSP provides several types of tags for embedding Java code and dynamic content in web pages: Used to declare variables and methods that become part of the servlet class. Contains Java code that executes every time the page is requested. Evaluates a Java exp...
Full solved answer →Differences between JSP and servlets
How JSP differs from servlets? Discuss various methods of writing servlet programs with suitable example.[10]
Aspect Servlet JSP ---------------------- Type Pure Java program HTML with embedded Java Syntax Java code only Mix of HTML and Java code Development Requires Java programming knowledge Easier for web designers; less Java needed Compilation Compiled to bytec...
Full solved answer →Make Unit 6 stick
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