BCA TU OOP in Java Question Paper 2019
Object Oriented Programming in Java (OOP in Java) is one of the most important subject in an undergraduate student's life. This is the subject which teaches them the real programming and coding. Java is one of the highly used programming language for the software and web development. Though java is not much used in web's back-end these days, this is used mostly for mobile app and desktop app development.
Thus if someones studies JAVA properly the he/she can easily get internship or entry level join in IT/ Software Companies. Moreover during campus placements most of the companies takes exams in Java so having learned Java is great. Now, moving toward our today's topic BCA TU Third Semester Question Paper of Java 2019.
1. Multiple Choice Question:
i) Which one of the following is not a valid java bit-wise operator?
a) >>
b) <<
c) >>>
d) <<<
ii) Which one of the following keyword is used to declare an exception?\
a) throws
b) throw
c) try
d) catch
iii) Which of these is an incorrect array declaration?
a) int ary[] = new int[5];
b) int[] ary = new int[5];
c) int ary = int[5] new;
d) int ary[]; ary = new int[5];
iv) Which one of the following access specifier is appropriate for members of super-class to access only from subclass?
a) private
b) protected
c) public
d) default
v) Which one of the following is not a collection class defined in java?
a) Linked List
b) Hash Set
c) Tree Set
d) Graph Set
vi) Which one of the following inheritance is best implanted using interface in java?
a) single inheritance
b) multi-level inheritance
c) multiple inheritance
d) hierarchical inheritance
vii) Which one of the following method is called only once during the run time of your applet?
a) stop()
b) paint()
c) init()
d) start()
viii) Which of these method of class String is used to compare two String objects for their
equality?
a) equals()
b) Equals()
c) is Equal()
d) Is Equal()
ix) What is the default value of priority variable MIN_PRIORITY and MAX_PRIORITY?
a) 0 & 63
b) 1 & 10
c) 0 & 1
d) 1 & 32
x) Which one of the following is not java swing container?
a) Panel
b) Tabbed Pane
c) Scroll Pane
d) Scroll bar
Group B contains the following questions:
2. Define OOP. Explain features of Object Oriented Programming Language.
3. Explain different types of control statements used in java.
4. Define Abstract Class. Explain different types of Access controls available in java.
5. Define method overriding? Write any program to implement concept of multiple inheritance in Java.
6. Why it is important to handle exception in java? Write a program to illustrate the use of exception handling.
7. Define the use of static keyword. Write any four String methods used in java with example.
8. Define super, final and this keyword in java. Explain the concept of MVC in brief.
Group C contains the following questions:
9. a) Define multi-threading. Write a java program to show the inter-thread communication.
b) Define Stream. Write a program in java to copy the content from one file to another.
10. a) Define Collection Class. Explain different Wrapper classes and associated methods in java.
b) Define AWT. Explain different types of Layout Managers in java.
11. a) List and explain any five swing controls with their uses.
b) Define JDBC. Write a program to display all records from a table of database.
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