JAVA CONSTRUCTORS AND METHODS QUIZ

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

MyClass(void) {}

MyClass(){}

public MyClass(){}

public MyClass(void){}

1 and 3

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Which of these is a legal definition of a method named examveda assuming it throws IOException, and returns void. Also assume that the method does not take any arguments. Select the one correct answer.

examians() throws IOException{}

void examians() throw IOException{}

void examians(void) throws IOException{}

void examians() throws IOException{}

void examians() {} throws IOException

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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); }}

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

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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();}}

Runtime Exception

Animal Wild

Compilation Error

Wild Animal

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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); }}

int

Compilation fails

None of these

long

Compilation clean but throws RuntimeException

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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

Prints 7

Compilation Fails

Prints 0

None of these

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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 A(String s);

A a = new B(5);

A a = new B();

None of these

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class MyClass{int i;int j;public MyClass(int i, int j){this.i = i;this.j = j;}public void call(){System.out.print("One");}}public class Test{public static void main(String args[]){MyClass m = new MyClass(); //line 1m.call(); //line 2}}

One

Compilation fails due to an error on line 2

Compilation fails due to an error on line 1

Compilation succeed but no output.

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

Storage Area

Heap

Array

Stack

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The main method should be static for the reason

It can be executed without creating any instance of the class.

None of these

It can be accessed by every method or variable without any hindrance.

It can be accessed easily by the class loader.

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