JSP Includes

There are three ways to insert code:
1. Expressions: <=
2. Scriptlets: <%
3. Declarations: <!

<html>
<head><title>Hello</title></head>
<body>

<p>
One way is by using an expression:
<%= request.getParameter("name") %>
</p>

<p>
Another is by using a scriplet:

<% //scriptlet example
if (request.getParameter("name") == null) {
   out.println("Hello World");
}
else {
  out.println("Hello, " + request.getParameter("name"));
}
%>
</p>
<p>
Finally, there are the declarations:
<p>
<%!
/**Instance variable for this servlet */
private int counter = 0;

/**Member function for this servlet */
private String randomNumber() {
      return(Math.random().toString());
}
%>
now call it: <%= randomNumber()%=>
</body></html>