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. (I) and (II) (II) and (III) Only (I) Only (III) Only (II) (I) and (II) (II) and (III) Only (I) Only (III) Only (II) 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 "Horse eats hay" Class cast Exception at runtime. prints "Mammal eats food" None of these prints "Cattle eats hay" prints "Horse eats hay" Class cast Exception at runtime. prints "Mammal eats food" None of these prints "Cattle eats hay" ANSWER DOWNLOAD EXAMIANS APP
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(); }} "vehiclebike" is printed. "carcar" is printed. ClassCastException exception is thrown at runtime. Compilation fails. "vehiclecar" is printed. "vehiclebike" is printed. "carcar" is printed. ClassCastException exception is thrown at runtime. Compilation fails. "vehiclecar" is printed. ANSWER DOWNLOAD EXAMIANS APP
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. } Name C None of these Name B Compilation fails due to an error on lines 5 Compilation fails due to an error on lines 9 Name C None of these Name B Compilation fails due to an error on lines 5 Compilation fails due to an error on lines 9 ANSWER DOWNLOAD EXAMIANS APP
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(); }} The code runs without output.. a a b c c b a c The code runs without output.. a a b c c b a c ANSWER DOWNLOAD EXAMIANS APP
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(); }} Compilation Error ExamiansDerived ExamiansDerivedBase BaseExamiansDerived ExamiansBaseDerived Compilation Error ExamiansDerived ExamiansDerivedBase BaseExamiansDerived ExamiansBaseDerived ANSWER DOWNLOAD EXAMIANS APP
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