Java Test-1
5 Questions
| Attempts: 142
Basic java questions
Questions and Answers
- 1.
Is Java a pure object oriented language?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
Java contains in-built support for primitive data types such as int,float etc. Not everything is a object unlike pure object oriented languages such as Ruby etc.Rate this question:
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- 2.
Public class A{ public void method(){ System.out.println("in A"); } public static void main(String[] args){ A a = new B(); System.out.println(a.method()); }}class B extends A{ public void method(){ System.out.println("in B"); } }What is the output of the above program?
- A.
Compile time error
- B.
Run time error
- C.
In B
- D.
In A
Correct Answer
C. In BExplanation
This is a basic class based polymorphism where the sub class overrides the super class's method.Rate this question:
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- 3.
Every class in java extends the
Correct Answer
java.lang.Object
Object - 4.
The public static void main method is the point for your application.
Correct Answer
entry
exit - 5.
Public class Execution{ static { System.out.println("in static"); } { System.out.println("in init block"); } public Execution(){ System.out.println("in constructor"); } public static void main(String[] args){ Execution e = new Execution(); }}
- A.
In static in init block in constructor
- B.
In static in constructor in init block
- C.
In constructor in init block in static
- D.
In constructor in static in init block
- E.
Compile time error
Correct Answer
A. In static in init block in constructor -
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Jan 16, 2013Quiz Edited by
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Jul 03, 2010Quiz Created by
Agent_hunt
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