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JAVA Constructors and Methods

JAVA Constructors and Methods
What is Math.floor(3.6)?

4.0
4
3.0
3

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JAVA Constructors and Methods
What is the output of the above program ?class Num { Num(double x ){ System.out.println( x ) ; } }public class Test extends Num { public static void main(String[] args){ Num num = new Num( 2 ) ; } }

2.0
Compile time error
None of these
0

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JAVA Constructors and Methods
Which of the following options is the best for generating random integer 0 or 1?

(int)(Math.random() + 0.5)
(int)Math.random()
(int)Math.random() + 1
(int)(Math.random() + 0.2)

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JAVA Constructors and Methods
The variables declared in a class for the use of all methods of the class are called

reference variables
None of these
instance variables
objects

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JAVA Constructors and Methods
In which area of memory, the system stores parameters and local variables whenever a method is invoked?

Array
Stack
Heap
Storage Area

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JAVA Constructors and Methods
What is the output for the below code ?class A{ public A(){ System.out.println("A"); } public A(int i){ this(); System.out.println(i); }}class B extends A{ public B(){ System.out.println("B"); } public B(int i){ this(); System.out.println(i+3); }}public class Test{ public static void main (String[] args){ new B(5); }}

A B 8
B 8 A 5
A 5 B 8
A B 5
None of these

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