Which statement is true about the classes and interfaces in the exhibit?
1.public interface A { 2. public void doSomething(String thing); 3.} 1.public class AImpl implements A { 2. public void doSomething(String msg) {} 3.} 1.public class B { 2. public A doit() { 3. /*more code here*/ 4. } 5. 6. public String execute() { 7. /*more code here*/ 8. } 9.} 1.public class C extends B { 2. public AImpl doit() { 3. /*more code here*/ 4. } 5. 6. public Object execute() { 7. /*more code here*/ 8. } 9.}

Question

Which statement is true about the classes and interfaces in the exhibit?

1.public interface A {
2.  public void doSomething(String thing);
3.}

1.public class AImpl implements A { 
2.  public void doSomething(String msg) {}
3.}

1.public class B {
2.  public A doit() {
3.   /*more code here*/
4.  }
5.
6.  public String execute() {
7.   /*more code here*/
8.  }
9.}

1.public class C extends B {
2.  public AImpl doit() {
3.   /*more code here*/ 
4. }
5.
6.  public Object execute() {
7.   /*more code here*/
8.  }
9.}

Examsnet · Accepted Answer

Correct Answer is : Compilation of class C will fail because of an error in line 6.

Object Oriented Programming (OOPs)