Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

public void destroy() {
...
}
}
// Other methods if necessary
The servlet engine controls the servlets using init, doGet, doPost,
destroy, and other methods. By default, the doGet and doPost methods do
nothing. To handle a GET request, you need to override the doGet method;
to handle a POST request, you need to override the doPost method.
Listing 42.2 gives a simple Java servlet that generates a dynamic Web
page for displaying the current time, as shown in Figure 42.15.
Figure 42.15
Servlet CurrentTime displays the current time.
Listing 42.2 CurrentTime.java
package chapter42;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class CurrentTime extends HttpServlet {
/** Process the HTTP Get request */
public void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("The current time is " + new java.util.Date());
out.close(); // Close stream
}
}
The HttpServlet class has a doGet method. The doGet method is invoked
when the browser issues a request to the servlet using the GET method.
Your servlet class should override the doGet method to respond to the
GET request. In this case, you write the code to display the current
time.
Servlets return responses to the browser through an HttpServletResponse
object. Since the setContentType("text/html") method sets the MIME type
to “text/html,” the browser will display the response in HTML. The
getWriter method returns a PrintWriter object for sending HTML back to
the client.
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