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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?

Storage Area
Array
Stack
Heap

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

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JAVA Constructors and Methods
Which of the modifier can't be used for constructors?

public
static
protected
private

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JAVA Constructors and Methods
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor?

MyClass(){}
public MyClass(void){}
MyClass(void) {}
public MyClass(){}
1 and 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 ) ; } }

None of these
0
2.0
Compile time error

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

None of these
int
double
void

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