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How can it compile

 
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A is not a Runnable , how can all these compile

 
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Have you tried it? What happened?
 
Mahtab Alam
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It compiles successfully
 
Greenhorn
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Cast between an unrelated class and interface is allowed because they might have a common subtype.
 
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Mahtab Alam wrote:It compiles successfully


Maybe; but I'll bet you got a LOT of warnings about unchecked casts.

Winston
 
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