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subclass of component

 
Roopa Bagur
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posted 23 years ago
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47. In the list below, which subclass(es) of Component cannot be directly instantiated:
a) Panel
b) Dialog
c) Container
d) Frame
What is the answer ?
 
Valentin Crettaz
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posted 23 years ago
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I think all of them may be directly instantiated since none of them is abstract...
Correct me if I'm wrong..
Val

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Ragu Sivaraman
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posted 23 years ago
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I have to say its Dialog
Coz they dont have a dummy constructor
They need Frame to exist before they can be constructed
Any thought?
Ragu
 
Valentin Crettaz
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posted 23 years ago
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Yeah I agree but I also think that the question could be formulated in a better way.
Val

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