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JSP Expression tutorial
Basic principle of expression to use
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Semicolon cannot be used to end an expression
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The expression element can contain any expression that is valid according to java language specification
An expression can be complex and composed of more than one part of expression. The parts of an expression are evaluated in left-to –right order. This evaluation is performed at the run time, and thus has full access to information about the request. For example the following shows the date and time that the page requested.
Current time: <%=new java.util.Date() %>
These are certain implicit object that can be used inside an expression. These are discussed later in detail, but the ones that are frequently used are given here.
- request , the HTTPServletRequest
- response the HTTPServletResponse
- out, the print Writer used to send output to the client
Here is an example
Your hostname: <%=request.getRemoteHost()%>
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