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(); } }

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(); } }

12

23

321

123

12

23

321

123

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JAVA Inheritence
Determine output:class Small{ public Small(){ System.out.print("a "); }}class Small2 extends Small{ public Small2(){ System.out.print("b "); }}class Small3 extends Small2{ public Small3(){ System.out.print("c "); }}public class Test{ public static void main(String args[]){ new Small3(); }}

a b c

c

The code runs without output..

a

c b a

a b c

c

The code runs without output..

a

c b a

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JAVA Inheritence
The concept of multiple inheritance is implemented in Java byI. Extending two or more classes.II. Extending one class and implementing one or more interfaces.III. Implementing two or more interfaces.

Only (II)

Only (III)

Only (I)

(II) and (III)

(I) and (II)

Only (II)

Only (III)

Only (I)

(II) and (III)

(I) and (II)

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JAVA Inheritence
Which is true?

"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 a class and Y is an interface

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

"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 a class and Y is an interface

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

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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.

1 and 2

3 and 4

3 and 5

2 and 4

2 and 5

1 and 2

3 and 4

3 and 5

2 and 4

2 and 5

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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 "Mammal eats food"

prints "Horse eats hay"

Class cast Exception at runtime.

None of these

prints "Cattle eats hay"

prints "Mammal eats food"

prints "Horse eats hay"

Class cast Exception at runtime.

None of these

prints "Cattle eats hay"

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JAVA Inheritence

JAVA Inheritence The concept of multiple inheritance is implemented in Java byI. Extending two or more classes.II. Extending one class and implementing one or more interfaces.III. Implementing two or more interfaces.

JAVA Inheritence Which is true?

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
The concept of multiple inheritance is implemented in Java byI. Extending two or more classes.II. Extending one class and implementing one or more interfaces.III. Implementing two or more interfaces.

JAVA Inheritence
Which is true?

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.