Difference Between GenericServlet and HttpServlet in Tabular Form
Contents
GenericServlet and HttpServlet Difference
- The Key difference between GenericServlet and HttpServlet is that the GenericServlet is protocol independent and whereas HttpServlet is protocol dependent.
- GenericServlet belongs to javax.servlet.GenericServlet package while HttpServlet belongs to javax.servlet.http.HttpServlet package.
GenericServlet and HttpServlet Comparison Chart
| GenericServlet | HttpServlet |
|---|---|
| It is defined by javax.servlet package. | It is defined by javax.servlethttp package. |
| It describes protocol-independent servlet | It describes protocol-dependent servlet. |
| GenericServiet is not dependent on any particular protocol. It can be used with any protocol such as HTTP, SMTP, FTP, and so on. | HttpServlet is a dependent protocol and is only used with HTTP protocol. |
| All methods are concrete except the service() method. service() method is an abstract method. | All methods are concrete (non-abstract). service() is non-abstract method. service() can be replaced by doGet() or doPost() methods. |
| The service method is abstract. | The service method is non-abstract |
| It forwards and includes a request and is also possible to redirect a request. | It forwards and includes a request but it is not possible to redirect the request. |
| GenericServlet doesn’t allow session management with cookies and HTTP sessions. | HTTPServlet allows session management with cookies and HTTP sessions. |
| It is an immediate child class of Servlet interface. | It is an immediate child class of GenericServlet class. |
| GenericServlet is a superclass of HttpServlet class. | HttpServlet is a subclass of GenericServlet class. |