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 b c a The code runs without output.. c b a c a b c a The code runs without output.. c b a 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();}} Runtime exception Class B method2 Class C method3 Compilation Error Class C method2 Class C method3 None of these Runtime exception Class B method2 Class C method3 Compilation Error Class C method2 Class C method3 None of these 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 4 2 and 4 2 and 5 1 and 2 3 and 5 3 and 4 2 and 4 2 and 5 1 and 2 3 and 5 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 "Cattle eats hay" prints "Horse eats hay" None of these prints "Mammal eats food" Class cast Exception at runtime. prints "Cattle eats hay" prints "Horse eats hay" None of these prints "Mammal eats food" ANSWER DOWNLOAD EXAMIANS APP
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 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 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); }} hello (String, Integer[]) None of these Compilation fails Overridden: hello (String, Integer[]) hello (String, Integer[]) None of these Compilation fails Overridden: hello (String, Integer[]) ANSWER DOWNLOAD EXAMIANS APP
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