
OOPs Quiz - Advanced
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the output of the following code? class Test { int x; Test(int x) { this.x = x; } void print() { System.out.println(x); } } Test t = new Test(5); t.print();
5
0
Error
null
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which keyword is used to call a superclass constructor?
this
super
extends
base
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the output of the following code? class A { A() { System.out.println("A's Constructor"); } } class B extends A { B() { System.out.println("B's Constructor"); } } new B();
B's Constructor
A's Constructor
A's Constructor B's Constructor
Error
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following can be overloaded?
Constructors
Static methods
Main method
All of the above
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the role of a constructor in Java?
Initialize objects
Destroy objects
Create classes
Run threads
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these is NOT true about abstract classes?
Can have abstract and non-abstract methods
Can be instantiated
Can have constructors
Can have static methods
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which keyword is used to prevent inheritance?
private
static
final
const
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