What is JSP EL explain with example?
Advertisements. JSP Expression Language (EL) makes it possible to easily access application data stored in JavaBeans components. JSP EL allows you to create expressions both (a) arithmetic and (b) logical.
Is El ignored in JSP?
The default mode for JSP pages delivered using a descriptor from Servlet 2.3 or before is to ignore EL expressions; this provides backward compatibility….Deactivating EL Expression Evaluation.
| JSP Configuration | Page Directive isELIgnored | EL Encountered |
|---|---|---|
| Unspecified | Unspecified | Evaluated if 2.4 web.xml Ignored if <= 2.3 web.xml |
| false | Unspecified | Evaluated |
Which context is an implicit object in JSP?
pageContext
In JSP, pageContext is an implicit object of type PageContext class. The pageContext object can be used to set,get or remove attribute from one of the following scopes: page. request.
What is main purpose of using EL?
Expression language (EL) has been introduced in JSP 2.0. The main purpose of it to simplify the process of accessing data from bean properties and from implicit objects. EL includes arithmetic, relational and logical operators too.
What is not a valid JSP implicit object?
Exception: Exception implicit object is used in exception handling for displaying the error messages. I’m not covering it in detail as it is rarely used and not a useful implicit object while building a JSP application. pageContext: It is used for accessing page, request, application and session attributes.
Is else in JSP?
JSP If-else. “If else” statement is basic of all control flow statements, and it tells the program to execute the certain section of code only if the particular test evaluates to true. This condition is used to test for more than one condition whether they are true or false.
