Inner Classes Mock question doubt

[Hardik Raja]

Hello Friends,

This is a question from K & B Book, Chapter Inner classes, Page 666

WHY OPTION D IS INCORRRECT..??

3. Given:
public interface Runnable { void run(); }
Which construct an anonymous inner class instance? (Choose all that apply.)
A. Runnable r = new Runnable() { };
B. Runnable r = new Runnable(public void run() { });
C. Runnable r = new Runnable { public void run(){}};
D. Runnable r = new Runnable() {public void run{}};
E. System.out.println(new Runnable() {public void run() { }});
F. System.out.println(new Runnable(public void run() {}));
Answer:
 
 E is correct. It defines an anonymous inner class instance, which also means it creates an
instance of that new anonymous class at the same time. The anonymous class is an
implementer of the Runnable interface, it must override the run() method of Runnable.
 
 A is incorrect because it doesn't override the run() method, so it violates the rules of
interface implementation. B, C, and D use incorrect syntax.

Can anyone please give their suggestions on the above problem.Thank you in advance.

Regards,
Hardik.S.Raja

[Chandra Bhatt]

Hi Hardik,

See the option 'D' separately:

D. Runnable r = new Runnable() {public void run{}};

Now did you get, what error is there?

I hope you got that!

[Nik Arora]

Whats your doubt exactly. What are you not understanding in that.

[Hardik Raja]

hi chandra bhatt,

Now did you get, what error is there?

I think there is no error....It perfectly defines an anonymous class that implements Runnable and also fulfills its contract by implementing run().


Is it a Printing mistake in Book..??

hardik
[ May 04, 2007: Message edited by: Hardik Raja ]

[Abdul Mohsin]

Error is in brackets {} it should be () and then {}

[Hardik Raja]

Oh my god...

Hey guys I am sorry for asking such a stupid question...

Anyways got it......Thanks...