JAVA CONSTRUCTORS AND METHODS QUIZ

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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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);}}

Compile time error as final method can't be overloaded

Method 1

Method 2

None of these

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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 clean but throws RuntimeException

None of these

Compilation fails

int

long

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class MyClass{ MyClass(){ System.out.print("one"); } public void myMethod(){ this(); System.out.print("two"); }} public class TestClass{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.myMethod(); }}

None of these

two one one

one Exception

Compilation Error

one one two

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

None of these

int

double

void

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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}}

Compilation succeed but no output.

Compilation fails due to an error on line 1

One

Compilation fails due to an error on line 2

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The implicit return type of a constructor is

There is no return type.

A class object in which it is defined.

None of these

void

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public class Test { }What is the prototype of the default constructor?

public Test(void)

public Test( )

None of these

Test(void)

Test( )

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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?

0 0

5 0

0 8

5 8

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