In JSP, the purpose of page object is to create the servlet instance. The role of page object is similar to this keyword in Java.
The page object represents the entire JSP page. It is an instance of java.lang.Object class. In JSP, the utilization of page object is very rare.
Example of JSP Page
JSP Class: <%=page.getClass()%>
Class Name: <%=page.getClass().getName() %>
Output:
Apart from operators, JSP also provide expression language implicit objects. The role of these implicit objects is to get the attribute associated with various object. Here, is the list of...
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In JSTL, the purpose of function tags is similar to the various string methods in Java. Hence, these tag performs common string manipulation operations. Functional tag is represented by following URL:...
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In JSP, the role of directive is to provide directions to the JSP container regarding the compilation of JSP page. Directives convey information from JSP page to container that give...
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JSP provides separate tag for comment section. The content inside these tag is completely ignored by JSP engine. The syntax of comment tag is mentioned below. <%-- This is a comment...
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The request object is used to fetch the user's data from the browser and pass this data to the server. The working of JSP request object is similar to the...
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In JSP, out is an implicit object that is associated with the response object. This object is used to write content to the output stream. Methods of JSP out Following are...
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Java Standard tag library (JSTL) is a collection of various type of JSP tags. Each tag control the behavior of JSP page and perform specific task such as database access,...
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JSP scriptlet tag allows you to insert programming logic inside JSP page. Hence, you can put valid Java code within scriptlet tags. Each Java statement must be followed by a...
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As the name implies, JSP action tags are used to perform various actions during the execution of JSP page. Here, each action performs some specific task. These tasks include: Forwarding the...
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JSP scripting provides an easy and efficient way to insert Java programming language in JSP pages. Here, Java is a default language. JSP also allows you to use any other...
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JSP life cycle The life cycle of JSP page internally implemented as a Servlet. These are the following stages through which a JSP page has to pass: Translation – This is an...
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JSP declaration tag is used to declare variables and methods in JSP page. Unlike scriptlet tag, JSP container placed the content of declaration tag outside the jspService() method. So, variables...
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JSP page directive provides various attributes with unique properties. These attributes can be applied to an entire JSP page. The syntax of Page directive is as follows: - <@page attribute="value"> Page directive...
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Basically, JSP response object is an instance of servlet's HttpServletResponse interface. It is used to resolve client request. Response object can be used to perform various functions such as encode...
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JSP introduced the concept of expression language (EL) in JSP 2.0 version. The purpose of expression language is to access and manipulate data easily without using any type of scriptlet. Why...
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In JSTL, the role of formatting tag is to specify the type of format that represents date and time. The following syntax represent the URL of formatting tag: - <%@ taglib...
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In JSTL, SQL tags are used to access and manipulate various operations of database. It is responsible to interact the JSP page with any type of Database such as MySQL,...
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Java bean is a special type of Java class that contains private variables and public setter and getter methods. Java bean class implements Serializable interface and provides default constructor. JSP allows...
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In JSP, session object is used to establish a connection between a client and a server. It maintains the state between them so that server recognize the user easily. The session...
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The object pageContext is used to access all the information of JSP page. It is an instance of javax.servlet.jsp.PageContext. The scope of pageContext can be defined explicitly. The object is valid...
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