Question

1. What are the differences between doGet and doPost in java servlet

2. What does response and request mean in a Java servlet ?

3. what does out.println do in a Java servlet ?

4. Where does Java compiler get the binaries for the following ?

import javax.servlet.*;
import javax.servlet.http.*;

Answer 1

1. What are the differences between doGet and doPost in java servlet
=> doGet is called when a HTTP GET request is made to the URL, while doPost is called when HTTP POST request is made.

2. What does response and request mean in a Java servlet ?
=> Request corresponds to Servlet request payload, which may contain url parameters, page name, Client passed form data etc.. The Response interface is for sending the response back to the client, which gives method to redirect, Add header and put the content to be sent.

3. what does out.println do in a Java servlet ?
=> out.println means to write on the stream provided by response object.. It means Sending the response back to the client.


4. Where does Java compiler get the binaries for the following ?

import javax.servlet.*;
import javax.servlet.http.*;

from the webserver on which the application is running.. Like JBoss, TomCat etc.

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