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

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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 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 if X and Y are either both classes or both interfaces

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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(); }}

ExamiansDerived
BaseExamiansDerived
ExamiansDerivedBase
ExamiansBaseDerived
Compilation Error

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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"
Class cast Exception at runtime.
prints "Horse eats hay"
prints "Cattle eats hay"
None of these

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JAVA Inheritence
Determine output:class A{ public void printName(){ System.out.println("Name-A"); }}class B extends A{ public void printName(){ System.out.println("Name-B"); }}class C extends A{ public void printName(){ System.out.println("Name-C"); }}1. public class Test{2. public static void main (String[] args){3. B b = new B();4. C c = new C();5. b = c;6. newPrint(b);7. }8. public static void newPrint(A a){9. a.printName();10. }11. }

Compilation fails due to an error on lines 5
Name B
None of these
Name C
Compilation fails due to an error on lines 9

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