raunakhajela/todo-demo.jsp

## todo-demo.jsp
<!--
isNew() : boolean - returns true if the session is new
getId() : String -  returns the session id
invalidate() : void - invalidates this session and unbinds any object associated with it
setMaxInactiveInterval(long mills) : void - sets the idle time for a session to expire, the value is supplied in milliseconds
-->

<%@ page import="java.util.*" %>
<html>
	<body>
		<!-- Step 1: Create html form -->
		<form action="todo-demo.jsp">
			Add new item: <input type="text" name="theItem" />

			<input type="submit" value="Submit">
		</form>
		<!-- <br>
		Item entered: <%= request.getParameter("theItem") %> -->

		<!-- Step 2: add new item to "to do" list -->

		<%
			//get the todo items from the session
			List<String> items = (List<String>) session.getAttribute("myTodoList");

			//if the to do items doesn't exist, then create a new one
			if (items == null) {
				items = new  ArrayList<String>();
				session.setAttribute("myTodoList", items);
			}

			//see if there is form data to add
			String theItem = request.getParameter("theItem");
			if (theItem != null) {
				items.add(theItem);
			}
		%>

		<!-- Step 3: display all "to do" item from session -->
		<hr>
		<b>To do List Items:</b> <br>
		<ol>
			<%
				for (String temp: items ) {
					out.println("<li>" + temp + "</li>");
				}
			%>
		</ol>
	</body>
</html>
	<!--
	isNew() : boolean - returns true if the session is new
	getId() : String - returns the session id
	invalidate() : void - invalidates this session and unbinds any object associated with it
	setMaxInactiveInterval(long mills) : void - sets the idle time for a session to expire, the value is supplied in milliseconds
	-->

	<%@ page import="java.util.*" %>
	<html>
	<body>
	<!-- Step 1: Create html form -->
	<form action="todo-demo.jsp">
	Add new item: <input type="text" name="theItem" />

	<input type="submit" value="Submit">
	</form>
	<!-- <br>
	Item entered: <%= request.getParameter("theItem") %> -->

	<!-- Step 2: add new item to "to do" list -->

	<%
	//get the todo items from the session
	List<String> items = (List<String>) session.getAttribute("myTodoList");

	//if the to do items doesn't exist, then create a new one
	if (items == null) {
	items = new ArrayList<String>();
	session.setAttribute("myTodoList", items);
	}

	//see if there is form data to add
	String theItem = request.getParameter("theItem");
	if (theItem != null) {
	items.add(theItem);
	}
	%>

	<!-- Step 3: display all "to do" item from session -->
	<hr>
	<b>To do List Items:</b> <br>
	<ol>
	<%
	for (String temp: items ) {
	out.println("<li>" + temp + "</li>");
	}
	%>
	</ol>
	</body>
	</html>