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 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 "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 a class and Y is an interface "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 "X extends Y" is correct for all combinations of X and Y being classes and/or interfaces 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();}} Compilation Error Runtime exception Class C method2 Class C method3 None of these Class B method2 Class C method3 Compilation Error Runtime exception Class C method2 Class C method3 None of these Class B method2 Class C method3 ANSWER DOWNLOAD EXAMIANS APP
JAVA Inheritence What will be the output?class One{ final int a = 15;}class Two extends One{ final int a = 20;}public class Test extends Two{ final int a = 30; public static void main(String args[]){ Test t = new One(); System.out.print(t.a); }} None of these 20 30 Compiler Error 15 None of these 20 30 Compiler Error 15 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 ExamiansDerivedBase ExamiansDerived ExamiansBaseDerived BaseExamiansDerived Compilation Error ExamiansDerivedBase ExamiansDerived ExamiansBaseDerived BaseExamiansDerived 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(); }} "vehiclecar" is printed. Compilation fails. "vehiclebike" is printed. ClassCastException exception is thrown at runtime. "carcar" is printed. "vehiclecar" is printed. Compilation fails. "vehiclebike" is printed. ClassCastException exception is thrown at runtime. "carcar" is printed. ANSWER DOWNLOAD EXAMIANS APP
JAVA Inheritence What will be the output?class Parent{ public void method(){ System.out.println("Hi i am parent"); }}public class Child extends Parent{ protected void method(){ System.out.println("Hi i am Child"); } public static void main(String args[]){ Child child = new Child(); child.method(); }} Run Time error Compiles successfully and print Compiles successfully and print Compile time error None of This Run Time error Compiles successfully and print Compiles successfully and print Compile time error None of This ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS