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 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 X and Y are either both classes or both 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 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 X and Y are either both classes or both interfaces 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 B Name C Compilation fails due to an error on lines 5 Compilation fails due to an error on lines 9 None of these Name B Name C Compilation fails due to an error on lines 5 Compilation fails due to an error on lines 9 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(); }} ExamiansBaseDerived BaseExamiansDerived Compilation Error ExamiansDerivedBase ExamiansDerived ExamiansBaseDerived BaseExamiansDerived Compilation Error ExamiansDerivedBase ExamiansDerived 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 a The code runs without output.. c b a a b c c a The code runs without output.. c b a a b 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();}} Compilation Error Class C method2 Class C method3 Class B method2 Class C method3 None of these Runtime exception Compilation Error Class C method2 Class C method3 Class B method2 Class C method3 None of these Runtime exception 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); }} None of these prints "Mammal eats food" prints "Horse eats hay" prints "Cattle eats hay" Class cast Exception at runtime. None of these prints "Mammal eats food" prints "Horse eats hay" prints "Cattle eats hay" Class cast Exception at runtime. ANSWER DOWNLOAD EXAMIANS APP
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