What will be printed after executing following program code?class Base{int value = 0; Base(){ addValue(); } void addValue(){ value += 10; } int getValue(){ return value; }}class Derived extends Base{Derived(){addValue();}void addValue(){value += 20;}}public class Test{public static void main(String[] args){Base b = new Derived();System.out.println(b.getValue());}}

JAVA Overriding and Overloading
What will be printed after executing following program code?class Base{int value = 0; Base(){ addValue(); } void addValue(){ value += 10; } int getValue(){ return value; }}class Derived extends Base{Derived(){addValue();}void addValue(){value += 20;}}public class Test{public static void main(String[] args){Base b = new Derived();System.out.println(b.getValue());}}

10

20

30

40

None of these

10

20

30

40

None of these

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JAVA Overriding and Overloading
____________ method cannot be overridden.

None of these

super

static

private

final

None of these

super

static

private

final

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JAVA Overriding and Overloading
What is output of the program?class Test{ public void display(int x, double y){ System.out.println(x+y); } public double display(int p, double q){ return (p+q); } public static void main(String args[]){ Test test = new Test(); test.display(4, 5.0); System.out.println(test.display(4, 5.0)); }}

9.0 9.0

Compilation Error

None of these

9 9

9.0 9.0

Compilation Error

None of these

9 9

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JAVA Overriding and Overloading
What is the output for the below code ?class A{ private void printName(){ System.out.println("Value-A"); }}class B extends A{ public void printName(){ System.out.println("Name-B"); }}public class Test{ public static void main (String[] args){ B b = new B(); b.printName(); }}

None of these

Value-A

Name-B

Compilation fails - private methods can't be override

Value-A Name-B

None of these

Value-A

Name-B

Compilation fails - private methods can't be override

Value-A Name-B

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JAVA Overriding and Overloading
What will be the output?class A{static void method(){System.out.println("Class A method");}}class B extends A{static void method(){System.out.println("Class B method");}}public class Test{public static void main(String args[]){A a = new B();a.method();}}

Runtime Error

None of these

Class A method

Class B method

Compilation Error

Runtime Error

None of these

Class A method

Class B method

Compilation Error

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JAVA Overriding and Overloading
What will be the output?class A{ int i = 10; public void printValue(){ System.out.print("Value-A"); }}class B extends A{ int i = 12; public void printValue(){ System.out.print("Value-B"); }}public class Test{ public static void main(String args[]){ A a = new B(); a.printValue(); System.out.print(a.i); }}

Value-B 11

Value-A 11

Value-A 10

None of these

Value-B 10

Value-B 11

Value-A 11

Value-A 10

None of these

Value-B 10

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JAVA Overriding and Overloading

JAVA Overriding and Overloading ____________ method cannot be overridden.

JAVA Overriding and Overloading What will be the output?class A{static void method(){System.out.println("Class A method");}}class B extends A{static void method(){System.out.println("Class B method");}}public class Test{public static void main(String args[]){A a = new B();a.method();}}

JAVA Overriding and Overloading
____________ method cannot be overridden.

JAVA Overriding and Overloading
What will be the output?class A{static void method(){System.out.println("Class A method");}}class B extends A{static void method(){System.out.println("Class B method");}}public class Test{public static void main(String args[]){A a = new B();a.method();}}