Rr411002 Object Oriented Programming Systems Through Java

RR

Code No: RR411002

IV B.Tech I Semester(RR) Supplementary Examinations, December 2009 OBJECT ORIENTED PROGRAMMING THROUGH JAVA (Electronics & Instrumentation Engineering, Electronics & Control Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Define an array. In Java, how the arrays of different dimensions can be created and initialized?[8] (b) Write about the usages of the keyword ‘final’ in Java. 2. (a) Discuss about static member data and static method with an example.

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(b) How do we invoke a constructor ?

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(c) Design a class to represent a Bank Account. Include the following members. • Name of the depositor • Account number • Type of Account • Balance amount in the account Methods • To assign initial values • To deposit an amount • To withdraw an amount after checking balance • To display the name and the balance.

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3. (a) Write a Java program to arrange a given set of numbers using Quick sort.

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(b) Write a Java program which takes a text and search for a given pattern in the text and find out the place of its first occurrence. The pattern and the text given as command line arguments. [8] 4. Write a program to create window and draw cross lines. 5. (a) Explain the class hierarchy of various window types. (b) Write down any event generators.

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6. Explain the applet architecture in detail.

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7. What are the clauses used in Java to handle exceptions? Explain the syntax of each clause with necessary examples. [16] 8. Write a Java program to read a set of sentences from a text file and check the following : (a) Number of vowels

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(b) Number of Words

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(c) Number of characters And produce a formatted report.

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