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Ambiguous use of abstract??

Steven Broadbent
Ranch Hand

Joined: Dec 10, 2002
Posts: 400
This compiles, as the member class can have modifiers just like
any other member of class Z.
But dosen't this contradict the notion that a class that contains
abstract members must itself be abstract?
class Z {
abstract class A {} // 1
final class B {} // 2
private class C {} // 3
protected class D {} // 4
public class E {} // 5
}


"....bigmouth strikes again, and I've got no right to take my place with the human race...."<p>SCJP 1.4
Vad Fogel
Ranch Hand

Joined: Aug 25, 2003
Posts: 504
Only a class that contains not implemented abstract methods, directly or through inheritance, must be declared abstract. Member classes or interfaces don't count.

8.1.1.1 abstract Classes
An abstract class is a class that is incomplete, or to be considered incomplete. Only abstract classes may have abstract methods (�8.4.3.1, �9.4), that is, methods that are declared but not yet implemented. If a class that is not abstract contains an abstract method, then a compile-time error occurs.
Sandhya Jayaram
Greenhorn

Joined: Dec 16, 2003
Posts: 16
is it that only a class having abstract methods has to be abstract itself. but if that abstract class is an inner class then the outer class need not be abstract?
hope i framed the question correctly
-sandhya
 
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