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R.G.P.V. Bhopal (MP)

M.C.A(4th Semester) EXAM,

JAVA PROGRAMMING & TECHNOLOGY [MCA-405 ]

Time: 3Hrs     Max Marks: 100     Min Marks: 40
Note:Attempt All Questions,All question Carry equal marks.

UNIT-I

Q.1.(a) What is method ?
       (b) What is encapsulation ?
       (c) What is the difference between a 'bit' & 'byte'?
       (d) What do yu understand by portability of code ?Are Java Programs portable?Justify your
answers.?

OR

Q.2.(a) Differentiate between the following :?
                 (i) Method overloading and method overriding
                (ii) Static and instance members of a class
       (b) What do you understand by polymorphism ? Briefly exaplain Dynamic method Dispatch with the help of an example.?

UNIT-II

Q.3.(a) Write a program to create a thread "A", which creates two child threads "B" and "C" have terminated. "B" and "C" must print their own names 100 times and then terminate.?
       (b) Explain Thread life cycle.?

OR

Q.4.(a) What do you understand by multi-threading ? What facilities are provided by Java to handle
concurrent access of a common data structure by two or more threads ?
       (b) How are the following code segments handled by Java ?
                 (i) int x = 0,y = 1; int z = y / x;
                 (ii) try {.....}
catch(Exception e)
{
System.out.println("Exception Caught");)
}
catch(Arithmetic Exception e)
{
System.out.println("Arithmetic Exception Caught");
}

UNIT-III

Q.5.(a) Discuss about the Event Delegation model in java.Discuss the role of Listener in Event Delegation model.?
       (b) AWT, what do the following terms mean and how are they related to each other ?
                     (i) Component
                    (ii) Container
                    (iii) Panel
                    (iv) Window

OR

Q.6.(a) Design an applet "Clicker" that displays a button and a text field on the screen.The text field must display the number of times the button is pressed.?
       (b) What do you understand by AWT Controls ? What are the various controls supported
by AWT ?

UNIT-IV

Q.7.(a) What are the similarity & differences between JDBC and ODBC?What is JDBC-ODBC bridge driver?
       (b) Make comparison between Nested SQL Exception and  Run-time SQL Exception.?

OR

Q.8.(a) Explain the following.
                  (i) File input stream
                 (ii) Character stream
      (b) Explain the following API of Java.sql package :
                 (i) DriverManager class
                (ii) SQLPermission class
               (iii) Driver interface
              (iv) Connection interface

UNIT -V

Q.9.(a) When a client Java application communicates to a Java server using RMI,a stub is created.Explain which part of the application creates the stub,where the stub resides and how it is used.
       (b) Briefly explain what functions do the socket APIs socket() and send() perform.

OR

Q.10.(a)Describe the purpose/functionality of the socket used as the server in reliable, connection-oriented socket-based communication with a client.(You need not discus client side functionality).?
          (b) Write notes on the following :
                    (i) Proxy Server
                   (ii) Collection interface

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