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) (I) and (II) Only (III) (II) and (III) Only (II) Only (I) (I) and (II) Only (III) (II) and (III) Only (II) 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(); }} ClassCastException exception is thrown at runtime. Compilation fails. "vehiclebike" is printed. "carcar" is printed. "vehiclecar" is printed. ClassCastException exception is thrown at runtime. Compilation fails. "vehiclebike" is printed. "carcar" is printed. "vehiclecar" is printed. 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. 3 and 5 3 and 4 1 and 2 2 and 4 2 and 5 3 and 5 3 and 4 1 and 2 2 and 4 2 and 5 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(); }} c b a a b c The code runs without output.. a c c b a a b c The code runs without output.. a c ANSWER DOWNLOAD EXAMIANS APP
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 Class C method2 Class C method3 None of these Compilation Error Runtime exception Class B method2 Class C method3 Class C method2 Class C method3 None of these Compilation Error Runtime exception 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. } None of these Name C Compilation fails due to an error on lines 5 Name B Compilation fails due to an error on lines 9 None of these Name C Compilation fails due to an error on lines 5 Name B Compilation fails due to an error on lines 9 ANSWER DOWNLOAD EXAMIANS APP
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