Given: 10. interface A { void x(); } 11. class B implements A { public void x(

Given:
10. interface A { void x(); }
11. class B implements A { public void x() { } public
voidy() { } }
12. class C extends B { public void x() {} }
And:
20. java.util.List list = new java.util.ArrayList();
21. list.add(new B());
22. list.add(new C());
23. for (A a:list) {
24. a.x();
25. a.y();;
26. }
What is the result?
1 Compilation fails because of an error in
line 25.
2 The code runs with no output.
3 An exception is thrown at runtime.
4 Compilation fails because of an error in
line 20.

Question Posted / rakesh

3 Answers
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Given: 10. interface A { void x(); } 11. class B implements A { public void x() { } public voidy..

Answer / neil

Compilation fails because of an error in
line 25.

Is This Answer Correct ?

44 Yes

2 No

Given: 10. interface A { void x(); } 11. class B implements A { public void x() { } public voidy..

Answer / pankaj malik

Compilation Error will be thrown at line 23 :
Type Mismatch: cannot convert from elemnt type Object to A.

Is This Answer Correct ?

9 Yes

0 No

Given: 10. interface A { void x(); } 11. class B implements A { public void x() { } public voidy..

Answer / r.jainrocks@gmail.com

Compilation fails because of an error in
line 25.

because interface A has no method definition for method y()
....

Is This Answer Correct ?

9 Yes

4 No

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