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 (I)
Only (III)
(II) and (III)
Only (II)
(I) and (II)

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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();}}

Compilation Error
Class B method2 Class C method3
None of these
Runtime exception
Class C method2 Class C method3

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JAVA Inheritence
What will be the result of compiling and executing the following program code?class Vehicle{ public void printSound(){ System.out.print("vehicle"); }}class Car extends Vehicle{ public void printSound(){ System.out.print("car"); }}class Bike extends Vehicle{ public void printSound(){ System.out.print("bike"); }}public class Test{ public static void main(String[] args){ Vehicle v = new Car(); Bike b = (Bike) v; v.printSound(); b.printSound(); }}

ClassCastException exception is thrown at runtime.
"vehiclecar" is printed.
"vehiclebike" is printed.
"carcar" is printed.
Compilation fails.

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JAVA Inheritence
What is the result of compiling and running the following code?class Base{ public Base(){ System.out.print("Base"); }}public class Derived extends Base{ public Derived(){ this("Examveda"); System.out.print("Derived"); } public Derived(String s){ System.out.print(s); } public static void main(String[] args){ new Derived(); }}

BaseExamiansDerived
Compilation Error
ExamiansDerivedBase
ExamiansBaseDerived
ExamiansDerived

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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

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