INTERVIEW QUESTIONS J2EE JSP DETAILS

Question: What is difference between scriptlet and expression?

Answer: What ever we write inside the scriptlet thats become a part of service mathod of jsp generated serlet. and executed with in service method. and treated as html info. and what ever we write inside expression its is wirteen out side of service methods and become part of global inside class of servlet and expression is used for declarion of methods and variable and treated as java code exeution parts.

Submitted by Pushpendra Singh ([email protected])

______________

With expression in jsp ,the results of evaluating the expression r converted to a string and directly included within the output page.Typically expressions r used to display simple values of variables or return values by invoking a bean's getter methods.Jsp expressions begin within tags and do not include semicolons.

But scriptlet can contain any number of language statements,variable or method declarations,or expressions that are valid in the page scripting language.Within scriptlet tags,you can declare variables or methods to use later in the file,write expressions valid in the page scripting language.
Scriptlet:

=> any java code embedded into a html page<% %>
=> it can have declaration,valid _expression
=> executed at the request time

Expression:
=> any valid _expression <%= %>
=> implicit object like request,response & out are used in the expression
=> evaluvated at run time

Submitted by ANGELA ARUL MANI Selvaraj ([email protected])

What ever we write inside the scriptlet thats become a part of service mathod of jsp generated serlet. and executed with in service method. and treated as html info. and what ever we write inside expression its is wirteen out side of service methods and become part of global inside class of servlet and expression is used for declarion of methods and variable and treated as java code exeution parts.

Submitted by Pushpendra Singh ([email protected])

______________

With expression in jsp ,the results of evaluating the expression r converted to a string and directly included within the output page.Typically expressions r used to display simple values of variables or return values by invoking a bean's getter methods.Jsp expressions begin within tags and do not include semicolons.

But scriptlet can contain any number of language statements,variable or method declarations,or expressions that are valid in the page scripting language.Within scriptlet tags,you can declare variables or methods to use later in the file,write expressions valid in the page scripting language.
Scriptlet:

=> any java code embedded into a html page<% %>
=> it can have declaration,valid _expression
=> executed at the request time

Expression:
=> any valid _expression <%= %>
=> implicit object like request,response & out are used in the expression
=> evaluvated at run time

Submitted by ANGELA ARUL MANI Selvaraj ([email protected]) Source: CoolInterview.com

If you have the better answer, then send it to us. We will display your answer after the approval.

Rules to Post Answers in CoolInterview.com:-

• There should not be any Spelling Mistakes.
• There should not be any Gramatical Errors.
• Answers must not contain any bad words.
• Answers should not be the repeat of same answer, already approved.
• Answer should be complete in itself.

Name :*
Email Id :*
Answer :*
Verification Code	Not readable? Load New Code
Enter the above shown code: *
	Inform me about updated answers to this question