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JSP Interview Questions

Suresh
18/11/2016 0 0

Explain JSP Technology.

JSP is a standard extension of Java and is defined on top of Servlet extensions. Its goal is to simplify management and creation of dynamic web pages. It is platform-independent, secure, and it makes use of Java as a server side scripting language.

Explain Implicit objects in JSP.

Objects created by web container and contain information regarding a particular request, application or page are called Implicit Objects. They are :

1. response

2. exception

3. application

4. request

5. session

6. page

7. out

8. config

9. Page Context

How to include static files in a JSP page?

Static pages are always included using JSP include directive. This way the inclusion is performed in the translation phase once. Note that a relative URL must be supplied for file attribute. Although static resources may be included, it is not preferred as each request requires inclusion.

How can the output of JSP or servlet page be prevented from being cached by the browser?

Using appropriate HTTP header attributes to prevent the dynamic content output by a JSP page from being cached by the browser.

How to restrict page errors display in a JSP page?

By setting up an “ErrorPage”  attribute of PAGE directory to the name of the error page in the JSP page, and then in the error jsp page set “isErrorpage=”TRUE”, Errors can be stopped from getting displayed.

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