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A question about container!

 
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In the list below, which subclass(es) of Component cannot be directly instantiated:
a) Panel
b) Dialog
c) Container
d) Frame
The answer is Container. But why the Container can not be instantiated directly?
 
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'cos Container is an abstract class.
 
laura_zpf
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I have checked the document, but I do not find that the Container is abstract. It is defined as public class Container extends component.
 
laura_zpf
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I have checked the document, but I do not find that the Container is abstract. It is defined as public class Container extends component.
 
Greenhorn
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from Bill Brogden's Java2 Exam Cram,


Container was an abstract class in Java 1.0 and 1.1,but for the Java JDK1.2 it is no longer declared abstract.


HTH,
Ramani.
 
Anonymous
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Laura,
All the options you have given can be instantiated.
In fact (d) is also correct. You can try this out:
Container c = new Container();
Ramani has correctly pointed out that Conatiner is no longer an abstract class.
Hope this helps
-sampaths
 
laura_zpf
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Thank you! sampaths77! you means this question only correct in the JDK1.0 but not correct for now.
 
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