JAVA CONSTRUCTORS AND METHODS QUIZ

What is the expected output?public class Profile { private Profile(int w) { // line 1 System.out.print(w); } public static Profile() { // line 5 System.out.print (10); } public static void main(String args[]) { Profile obj = new Profile(50); }}

10 50

Won't compile because of line (1), constructor can't be private

Won't compile because of line (5), constructor can't be static

50

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Determine Output:class A{public static void method(int i){System.out.print("Method 1");}public static int method(String str){System.out.print("Method 2");return 0;}}public class Test{ public static void main(String args[]){A.method(5);}}

None of these

Method 2

Method 1

Compile time error as final method can't be overloaded

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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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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

Compile time error

2.0

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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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What is the expected output?class Animal {Animal() {System.out.println("Animal");}}class Wild extends Animal{Wild() {System.out.println("Wild");super();}}public class Test {public static void main(String args[]) {Wild wild = new Wild();}}

Compilation Error

Animal Wild

Runtime Exception

Wild Animal

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

public MyClass(void){}

MyClass(void) {}

public MyClass(){}

MyClass(){}

1 and 3

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What will be the return type of a method that not returns any value?

None of these

double

void

int

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What is the expected output?public class Profile {private Profile(int w) { // line 1System.out.print(w);}public final Profile() { // line 5System.out.print(10);}public static void main(String args[]) {Profile obj = new Profile(50);}}

10 50

Won't compile because of line (5); constructor can't be final

50

Won't compile because of line (1); constructor can't be private

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What is the output for the below code?public class Test{ public static void printValue(int i, int j, int k){ System.out.println("int"); } public static void printValue(byte...b){ System.out.println("long"); } public static void main(String... args){ byte b = 9; printValue(b,b,b); }}

Compilation fails

None of these

long

Compilation clean but throws RuntimeException

int

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