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) Only (II) Only (III) Only (I) (II) and (III) (I) and (II) Only (II) Only (III) Only (I) (II) and (III) ANSWER DOWNLOAD EXAMIANS APP
JAVA Inheritence What will be the result after compiling this code?class SuperClass{ public int doIt(String str, Integer... data)throws Exception{ String signature = "(String, Integer[])"; System.out.println(str + " " + signature); return 1; }}public class Test extends SuperClass{ public int doIt(String str, Integer... data){ String signature = "(String, Integer[])"; System.out.println("Overridden: " + str + " " +signature); return 0; } public static void main(String... args){ SuperClass sb = new Test(); sb.doIt("hello", 3); }} Compilation fails hello (String, Integer[]) Overridden: hello (String, Integer[]) None of these Compilation fails hello (String, Integer[]) Overridden: hello (String, Integer[]) None of these 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 Compilation Error Class C method2 Class C method3 Runtime exception None of these Class B method2 Class C method3 Compilation Error Class C method2 Class C method3 Runtime exception None of these 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 BaseExamiansDerived ExamiansDerivedBase ExamiansDerived ExamiansBaseDerived Compilation Error BaseExamiansDerived ExamiansDerivedBase ExamiansDerived ExamiansBaseDerived 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(); } } 23 123 12 321 23 123 12 321 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 "Mammal eats food" None of these Class cast Exception at runtime. prints "Horse eats hay" prints "Cattle eats hay" prints "Mammal eats food" None of these Class cast Exception at runtime. prints "Horse eats hay" prints "Cattle eats hay" ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS