This week's giveaway is in the Android forum.
We're giving away four copies of Android Security Essentials Live Lessons and have Godfrey Nolan on-line!
See this thread for details.
The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes overriding Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of Android Security Essentials Live Lessons this week in the Android forum!
JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
Bookmark "overriding" Watch "overriding" New topic


wei liu
Ranch Hand

Joined: Dec 06, 2001
Posts: 56
Question 129)
public interface AQuestion
void someMethod();
The class which implements AQuestion
Should have someMethod which must necessarily be public.
Should have someMethod which could be "friendly" or public
Should have someMethod which should not throw any checked exceptions.
Should have someMethod which cannot be sychronized as sychronized is not in the signature of the interface defination
the ans are 1st and 3rd. why is 1st choice right? i thought 2nd was correct. friendly to friendly for overriding should be fine.
Michael Ernest
High Plains Drifter

Joined: Oct 25, 2000
Posts: 7292

Methods declared in an interface are inherently public, even if you don't include the keyword. Therefore the implemented method must be public in any class. In any event, answers 1 and 2 are mutually exclusive, so its either/or.
The synchronized keyword is not inheritable. Any method can be synchronized regardless of the method it is overriding.
Michael Ernest, co-author of: The Complete Java 2 Certification Study Guide

Make visible what, without you, might perhaps never have been seen.
- Robert Bresson
subject: overriding
Similar Threads
Interface question
from Abhilash Quiz. Question # 9
need your help about a access qeustion.
class implementing interface