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JAVA Constructors and Methods

JAVA Constructors and Methods
The implicit return type of a constructor is

There is no return type.
void
None of these
A class object in which it is defined.

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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 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); }}

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

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

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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 ?

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

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

1 and 3
public MyClass(void){}
MyClass(){}
public MyClass(){}
MyClass(void) {}

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