Java OCA OCP Practice Question 2739

Question

Given: 

1. public class Hose <E extends Hose> {  
2.   E innerE;  
3.   public static E doShape(E e, Hose<E> e2) {  
4.     // insert code here   
5.   }  
6.   public E getE() {  
7.     return innerE;  
8. } }

Which can be inserted, independently at line 4, for the code to compile? (Choose all that apply.)

  • A. return e;
  • B. return e.getE();
  • C. return e2;
  • D. return e2.getE();
  • E. return new Hose().getE();
  • F. Compilation fails regardless of which return is inserted.


F   is correct.

Note

The generic type "E", which is declared at the class level, will be associated with each instance of Hose, and is not accessible to static methods.

If doShape() was non-static, A and D would be correct.




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