Object Oriented Programming (Cs504d)
- 1.Which is a reserved word in the Java programming language?
- A.
Method
- B.
Array
- C.
Reference
- D.
Native
- 2.From any non-sub-class Class outside the package, which access is possible?
- A.
Public
- B.
Protected
- C.
Default
- D.
Private
- 3.What will be the output if you execute the following java code? import java.lang.*; class firstapp { static() { System.out.println(“Hello world”); } }
- A.
Hello world
- B.
Compilation error
- C.
Run time error
- D.
Hello world with a warning message
- 4.Public class Test{} What is the prototype of the default constructor?
- A.
Test()
- B.
Test(void)
- C.
Public Test()
- D.
Public Test(void)
- 5.Which will legally declare, construct, and initialize an array?
- A.
Int [] mylist={“1”,”2”,”3”};
- B.
Int [] mylist=(1,2,3);
- C.
Int mylist[][]={4,9,7,0};
- D.
Int mylist[]={4,6,9};
- 6.Which design model lies behind the concept of object oriented programming?
- A.
Top-down design
- B.
Bottom-up design
- C.
Both of these
- D.
None of these
- 7.Which of the following is an object based language (OBL) ?
- A.
Ruby
- B.
Delphi
- C.
Java Script
- D.
Simula
- 8.In OOPs which mechanism binds data and function together ?
- A.
Modules
- B.
Encapsulation
- C.
Class
- D.
Abstraction
- 9.The Scanner class defined in which package?
- A.
Utility
- B.
Applet
- C.
Input-output
- D.
Language
- 10.Java is pure object oriented programming language because
- A.
Java is Platform-independent
- B.
Java is both compiled and interpreted
- C.
A single line of code cannot go outside from the class
- D.
None of the above
- 11.In Java >>> operator is called
- A.
Left shift
- B.
Right shift with zero fill
- C.
Right shift
- D.
Left shift with zero fill
- 12.To check which object is of which class, which of the following is used
- A.
Sizeof
- B.
Comma
- C.
Instanceof
- D.
None of the above
- 13.Which conditional statement always returns true value?
- A.
If(a==1)
- B.
If(a=0)
- C.
If(a=1)
- D.
If(1==a)
- 14.Array subscript in Java always starts at
- A.
-1
- B.
1
- C.
0
- D.
Any value
- 15.This reference is built-in reference can only used within
- A.
Static function of the class
- B.
Non-static function of the class
- C.
Cannot be used
- D.
None of the above
- 16.Object communicate with each other by sending messages in the form of
- A.
Class
- B.
Through inheritance
- C.
Functions
- D.
None of the above
- 17.Data is given less importance in
- A.
Structure programming language
- B.
Object-oriented language
- C.
Procedural language
- D.
Object based language
- 18.Which of the following is an example of procedural programming language?
- A.
C++
- B.
ALGOL
- C.
Java
- D.
Ruby
- 19.Which command disassembles a class file?
- A.
Javac
- B.
Javah
- C.
Javap
- D.
Jdb
- 20.Java supports Unicode character set which is
- A.
20 bits
- B.
64 bits
- C.
32 bits
- D.
16 bits
Questions: 11 | Attempts: 204 | Last updated: Mar 15, 2022
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