JAVA Inheritence Which is true? "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 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 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 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 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(); }} ExamiansDerivedBase ExamiansDerived ExamiansBaseDerived BaseExamiansDerived Compilation Error ExamiansDerivedBase ExamiansDerived ExamiansBaseDerived BaseExamiansDerived Compilation Error 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); }} Class cast Exception at runtime. prints "Mammal eats food" prints "Horse eats hay" prints "Cattle eats hay" None of these Class cast Exception at runtime. prints "Mammal eats food" prints "Horse eats hay" prints "Cattle eats hay" None of these 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(); }} a b c c b a a c The code runs without output.. a b c c b a a c The code runs without output.. ANSWER DOWNLOAD EXAMIANS APP
JAVA Inheritence What is the output of the following program code?abstract class C1{public C1(){ System.out.print(1); } } class C2 extends C1{ public C2(){ System.out.print(2); } } class C3 extends C2{ public C3(){ System.out.println(3); } } public class Test{ public static void main(String[] a){ new C3(); } } 12 123 23 321 12 123 23 321 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. 2 and 5 3 and 5 3 and 4 2 and 4 1 and 2 2 and 5 3 and 5 3 and 4 2 and 4 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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