Object Oriented Programming (OOPs)
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Question : 4 of 72
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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.}
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