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WDD_lec_27 - Java Servlets Lec 27 Creating a Simple Web...

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    Java Servlets Lec 27
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    Creating a Simple Web Application in Tomcat
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    Tomcat Directory Structure myapp
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    Tomcat Setup Folder for HTML and JSP pages Folder for servlet and other java classes
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    Servlet Types Servlets are based on two main packages javax.servlet javax.servlet.http GenericServlet For writing protocol independent servlets HttpServlet Extends from GenericServlet class Adds functionality for writing HTTP specific servlets
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    Servlet class hierarchy Object GenericServlet ServletResponse HttpServletRequest ServerRequest HttpServlet HttpServletResponse javax.servlet javax.servlet.http
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    Writing Servlet Every servlet must implement the javax.servlet.Servlet interface Contains the servlet’s life cycle methods etc. These are implemented by GenericServlet and HttpServlet classes Extend your servlet from one of these classes and add your own functionality public class MyServlet extends GenericServlet public class HelloServlet extends HttpServlet
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    Types of HTTP Requests Get Post Delete Options Put Trace
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