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JAVA Constructors and Methods

JAVA Constructors and Methods
Determine output of the following program.public class Test{ public static void main(String args[]){ System.out.println( Math.floor( Math.random( ) ) ) ; }}

1.0
0.0
10.0
0.5

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JAVA Constructors and Methods
What will be the result of compiling and running the given code?class A{ int b=10; private A(){ this.b=7; } int f(){ return b; }}class B extends A{ int b;}public class Test{ public static void main(String[] args){ A a = new B(); System.out.println(a.f()); }}

Prints 10
Compilation Fails
Prints 0
None of these
Prints 7

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JAVA Constructors and Methods
Given the following piece of code:class Person{ public int number;}public class Test{ public void doIt(int i , Person p){ i = 5; p.number = 8; } public static void main(String args[]){ int x = 0; Person p = new Person(); new Test().doIt(x, p); System.out.println(x + " " + p.number); }}What is the result?

5 0
5 8
0 0
0 8

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JAVA Constructors and Methods
public class Test { }What is the prototype of the default constructor?

None of these
public Test( )
Test( )
Test(void)
public Test(void)

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

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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); }}

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

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