Include Directive in JSP
How is Page Directive used in JSP?
Explanation
Usually a page directive tag specifies the attributes that are common to the whole JSP page.
<%@ page [language="" ] [ extends="" ] [ import="" ]
[ session="t|f" ] [ buffer="" ] [ autoFlush=" " ]
[ isThreadSafe=" " ][ info=" " ] [ errorPage=" " ]
[ contentType=" " ] [ isErrorPage=" " ] %>
Following table lists the atrributes of Page Directive.
<%@page contentType="text/html" import="java.util.Date" %>
<p>Current Date is ::</p>
<%= new java.util.Date() %> Result :
Current Date is ::
Thu Dec 10 11:22:56 IST 2009
In the above example we have used the page directive attribute "import" to import the java class "java.util.Date", using this class the current date is displayed using the new instance of the class.
Syntax:
<%@ page [language="" ] [ extends="" ] [ import="" ]
[ session="t|f" ] [ buffer="" ] [ autoFlush=" " ]
[ isThreadSafe=" " ][ info=" " ] [ errorPage=" " ]
[ contentType=" " ] [ isErrorPage=" " ] %>
Following table lists the atrributes of Page Directive.
| Attributes | Description |
| language | Specifies the language used in the page,for JSP it can be only "java". |
| extends | Specifies whether the page uses an extended class |
| import | Specifies the classes to be imported |
| session | It is used to make a session value available to a jsp page, this attribute has a "boolean" value and its "true" by default. |
| autoflush | This is used to flush the buffer if it is set to "true" else it will not. |
| buffer | Specifies the pages buffer size |
| isThreadSafe | Specifies multi threading if it is set to "true", if set to "false" only one request is sent. |
| errorPage | Specifies the error page location for unhandled exceptions. |
| contentType | Specifies the content and mime type. |
| isErrorPage | Specifies whether to use the exception object,it is set to "true" to use the exception object, else it can be set to "false". |
Example :
<%@page contentType="text/html" import="java.util.Date" %>
<p>Current Date is ::</p>
<%= new java.util.Date() %>
Current Date is ::
Thu Dec 10 11:22:56 IST 2009
In the above example we have used the page directive attribute "import" to import the java class "java.util.Date", using this class the current date is displayed using the new instance of the class.
