A servlet is a Java class which is used to extend the capabilities of servers that host applications accessed by means of a request-response model. Servlets are mainly used to extend the applications hosted by webs servers, however, they can respond to other types of requests too. For such applications, HTTP-specific servlet classes are defined by Java Servlet technology.
A JSP is a text document which contains two types of text: static data and dynamic data. The static data can be expressed in any text-based format (like HTML, XML, SVG and WML), and the dynamic content can be expressed by JSP elements.
Difference between Servlet and JSP
|Servlet is a java code.||JSP is a html based code.|
|Writing code for servlet is harder than JSP as it is html in java.||JSP is easy to code as it is java in html.|
|Servlet plays a controller role in MVC approach.||JSP is the view in MVC approach for showing output.|
|Servlet is faster than JSP.||JSP is slower than Servlet because the first step in JSP lifecycle is the translation of JSP to java code and then compile.|
|Servlet can accept all protocol requests.||JSP only accept http requests.|
|In Servlet, we can override the service() method.||In JSP, we cannot override its service() method.|
|In Servlet by default session management is not enabled, user have to enable it explicitly.||In JSP session management is automatically enabled.|
|In Servlet we have to implement everything like business logic and presentation logic in just one servlet file.||In JSP business logic is separated from presentation logic by using javaBeans.|
|Modification in Servlet is a time consuming task because it includes reloading, recompiling and restarting the server.||JSP modification is fast, just need to click the refresh button.|
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