Determine output:class A{public void method1(){System.out.print("Class A method1");}}class B extends A{public void method2(){System.out.print("Class B method2");}}class C extends B{public void method2(){System.out.print("Class C method2");}public void method3(){System.out.print("Class C method3");}}public class Test{public static void main(String args[]){A a = new A();C c = new C();c.method2();a = c;a.method3();}}

JAVA Inheritence
Determine output:class A{public void method1(){System.out.print("Class A method1");}}class B extends A{public void method2(){System.out.print("Class B method2");}}class C extends B{public void method2(){System.out.print("Class C method2");}public void method3(){System.out.print("Class C method3");}}public class Test{public static void main(String args[]){A a = new A();C c = new C();c.method2();a = c;a.method3();}}

Class B method2 Class C method3

None of these

Runtime exception

Class C method2 Class C method3

Compilation Error

Class B method2 Class C method3

None of these

Runtime exception

Class C method2 Class C method3

Compilation Error

ANSWER DOWNLOAD EXAMIANS APP

JAVA Inheritence
What will be the output?class One{ final int a = 15;}class Two extends One{ final int a = 20;}public class Test extends Two{ final int a = 30; public static void main(String args[]){ Test t = new One(); System.out.print(t.a); }}

Compiler Error

30

20

None of these

15

Compiler Error

30

20

None of these

15

ANSWER DOWNLOAD EXAMIANS APP

JAVA Inheritence
Which of the following is true?1. A class can extend more than one class.2. A class can extend only one class but many interfaces.3. An interface can extend many interfaces.4. An interface can implement many interfaces.5. A class can extend one class and implement many interfaces.

2 and 4

2 and 5

1 and 2

3 and 5

3 and 4

2 and 4

2 and 5

1 and 2

3 and 5

3 and 4

ANSWER DOWNLOAD EXAMIANS APP

JAVA Inheritence
What is the result of compiling and running this program?class Mammal{ void eat(Mammal m){ System.out.println("Mammal eats food"); }}class Cattle extends Mammal{ void eat(Cattle c){ System.out.println("Cattle eats hay"); }}class Horse extends Cattle{ void eat(Horse h){ System.out.println("Horse eats hay"); }}public class Test{ public static void main(String[] args){ Mammal h = new Horse(); Cattle c = new Horse(); c.eat(h); }}

prints "Cattle eats hay"

prints "Mammal eats food"

prints "Horse eats hay"

None of these

Class cast Exception at runtime.

prints "Cattle eats hay"

prints "Mammal eats food"

prints "Horse eats hay"

None of these

Class cast Exception at runtime.

ANSWER DOWNLOAD EXAMIANS APP

JAVA Inheritence
What is the output of the following program code?abstract class C1{public C1(){ System.out.print(1); } } class C2 extends C1{ public C2(){ System.out.print(2); } } class C3 extends C2{ public C3(){ System.out.println(3); } } public class Test{ public static void main(String[] a){ new C3(); } }

123

321

23

12

123

321

23

12

ANSWER DOWNLOAD EXAMIANS APP

JAVA Inheritence
Which is true?

"X extends Y" is correct if and only if X is a class and Y is an interface

"X extends Y" is correct for all combinations of X and Y being classes and/or interfaces

"X extends Y" is correct if X and Y are either both classes or both interfaces

"X extends Y" is correct if and only if X is an interface and Y is a class

"X extends Y" is correct if and only if X is a class and Y is an interface

"X extends Y" is correct for all combinations of X and Y being classes and/or interfaces

"X extends Y" is correct if X and Y are either both classes or both interfaces

"X extends Y" is correct if and only if X is an interface and Y is a class

ANSWER DOWNLOAD EXAMIANS APP

JAVA Inheritence

JAVA Inheritence What will be the output?class One{ final int a = 15;}class Two extends One{ final int a = 20;}public class Test extends Two{ final int a = 30; public static void main(String args[]){ Test t = new One(); System.out.print(t.a); }}

JAVA Inheritence Which of the following is true?1. A class can extend more than one class.2. A class can extend only one class but many interfaces.3. An interface can extend many interfaces.4. An interface can implement many interfaces.5. A class can extend one class and implement many interfaces.

JAVA Inheritence Which is true?

JAVA Inheritence
What will be the output?class One{ final int a = 15;}class Two extends One{ final int a = 20;}public class Test extends Two{ final int a = 30; public static void main(String args[]){ Test t = new One(); System.out.print(t.a); }}

JAVA Inheritence
Which of the following is true?1. A class can extend more than one class.2. A class can extend only one class but many interfaces.3. An interface can extend many interfaces.4. An interface can implement many interfaces.5. A class can extend one class and implement many interfaces.

JAVA Inheritence
Which is true?