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       Code No: RA210502
                                                                              RA
           II B.Tech II Semester Supplimentary Examinations, Apr/May 2008
                 OBJECT ORIENTED PROGRAMMING THROUGH JAVA
       ( Common to Electronics & Communication Engineering, Computer Science
                           & Engineering and Information Technology)
       Time: 3 hours                                                         Max Marks: 80
                                    Answer any FIVE Questions
                                  All Questions carry equal marks



         1. Write a program for concatenating two strings.                                         [16]

         2. (a) Name any four Java packages. Give any two classes of a package.
             (b) What is data abstraction? What is information hiding? Contrast them.
             (c) Contrast: inheritance Vs. composition.                                        [6+5+5]

         3. (a) De ne virtual function and give advantages of it.
             (b) Explain about static and dynamic binding with examples. [8+8]

         4. Describe about various components in Swing.                                            [16]

         5. A program throws an exception and the appropriate exception handler begins exe-
            cution, and this exception handler in turns throws the same exception. Is this above
            approach creating an in nite recursion? Justify your answer with an example. [16]

         6. De ne a Thread? Explain the hierarchy of Thread class? Discuss about the various
            methods in thread class with examples.                                                 [16]

         7. Write a program to handle HTTP get request?                                            [16]

         8. (a) What is TCP/IP? What is the di erence between TCP/IP and UDP/IP?
             (b) What is socket? Which socket is used for client and server in TCP?
             (c) How does a client can create a connection with a server? How does a server
                 can create a connection with a client?                                     [5+5+6]




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