Week 2

Question 1

JavaBean definition?

Answer 1

Java public class that follows 3 rules

1. Is seriazable
2. Has a public no-argument constructor
3. Has necessary get/set methods

Question 2

JavaBean definition?

Answer 2

Java public class that follows 3 rules

1. Is seriazable
2. Has a public no-argument constructor
3. Has necessary get/set methods

Question 3

How to use Javabean?

Question 4

What does servlet class inherit from?

Answer 4

Http Servlet

Question 5

HttpServletRequest contains?

Answer 5

ip address
previously set cookies
data submitted with an input form
browser information

Question 6

HttpServletResponse contains?

Answer 6

generated web-pages
new cookies
error codes
redirects

Question 7

Forwarding

Answer 7

Forwarding happens entirely on server side

Browsers do not have a clue if forwarding happened

Question 8

What does a model do?

Answer 8

Encapsulates core data and logic
Independent from views
Model can be implemented with JavaBeans

Question 9

What does a view do?

Answer 9

Present the outputs to the user

Can be implemented with jsp

Question 10

What does a controller do?

Answer 10

Receives inputs from the user
Handles inputs
Connects model data to views and dispatches the views

Question 11

Servlet Context parameters?

Answer 11

Global application parameters

Question 12

Servlet Context parameters?

Answer 12

Global application parameters

Question 13

How to use Javabean?

Answer 13

////

Question 14

What does servlet class inherit from?

Answer 14

Http Servlet

Question 15

HttpServletRequest contains?

Answer 15

ip address
previously set cookies
data submitted with an input form
browser information

Question 16

HttpServletResponse contains?

Answer 16

generated web-pages
new cookies
error codes
redirects

Question 17

Forwarding

Answer 17

Forwarding happens entirely on server side

Browsers do not have a clue if forwarding happened

Question 18

What does a model do?

Answer 18

Encapsulates core data and logic
Independent from views
Model can be implemented with JavaBeans

Question 19

What does a view do?

Answer 19

Present the outputs to the user

Can be implemented with jsp

Question 20

What does a controller do?

Answer 20

Receives inputs from the user
Handles inputs
Connects model data to views and dispatches the views

Question 21

Servlet Init Parameters?

Answer 21

Servlet initialization parameters are defined for specific servlets and available only inside of the servlets

Servlet initialization params not global

Question 22

Servlet Context parameters?

Answer 22

Global application parameters

Question 23

What is GET?

Answer 23

Get shouldnt be used for saving big data
confidential info
no resubmission

Question 24

Servlet ContextListener?

Answer 24

Is an interface that needs
contextInitalized
contextDestroyed

Question 25

Commonly used JSTL libraries?

Answer 25

c - core tasks
fmt - formatting numbers
fn - functions
x - manipulations of xml