VU Midterm Paper 2011 CS506-Web Design and Development

Midterm Paper 2011  CS506-Web Design and Development

Midterm Paper 2011  CS506-Web Design and Development

Q. How can we prevent serialization? 5 marks

Answer:

We should use transient keyword mark a field that should not be serialized.

For example:

Transient OutputStream os;
transient Connecction conn;

Transient fields are returned as null once its read

Example:

import javax.swing.*;
import java.io.*
class Address implements Serializable{
String Street;
String City;
transient String HouseNo.;
-
-
-
-
}

(Bonfire, vuzs)

Why do we use prepared Statement object? 5 marks
How can a GUI component handle its own events? 3 marks
What Difference between serialization and de-serialization? 3 marks
Write Different between abstract class and interface class? 2 marks
Write 4 types of JDBC Driver. 2 marks
If a method is declared as protected where can be the method accessed? 2 marks
How do we load a driver and how do we define a connection for URL and JDBC (5)
What is the difference between Applet and Application (5)
Can an anonymous class be declared as implementing an inheritance and extending a class (3)
Difference between serialization and deserialization (3)
Difference between character oriented and byte oriented streams (2)
Why is executeUpdate() used (2)
Name component subclasses that support painting (2)