Presentation Tier Components
J2EE presentation tier components can be developed using Java servlets and Java Sever Pages (JSP). These components both operate within a conceptual container as do Java applets. These containers provide various services for the component that allow it to run in a secure, efficient environment.
These components are often referred to as a Web tier components since they are primarily designed to interact with Web browsers using the HTTP protocol. Java servlets were the first Web component. A servlet is a Java object which is a subclass of certain servlet API classes. The servlet accepts an HTTP request and provides an HTTP response within the body of certain methods called by the servlet container. If the response is ...
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