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JAVA Constructors and Methods

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

Heap
Array
Stack
Storage Area

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

3
4.0
4
3.0

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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 ) ; } }

None of these
2.0
0
Compile time error

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

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JAVA Constructors and Methods
class A{ A(String s){} A(){}}1. class B extends A{2. B(){}3. B(String s){4. super(s);5. }6. void test(){7. // insert code here8. }9. }Which of the below code can be insert at line 7 to make clean compilation ?

None of these
All of these
A a = new B();
A a = new A(String s);
A a = new B(5);

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JAVA Constructors and Methods
What will be the return type of a method that not returns any value?

void
int
double
None of these

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