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Simple question on IS-A and Has-A relationship?

 
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Hello Ranchers,

Can anyone explain me the difference between IS-A and HAS-A relationship?
Doesinterface implements IS-A/HAS-A relationship then why?,explain with example.

How is the flow of IS-A/HAS-A relationship?

who implements HAS_A relationship?

Thanks in Advance.
 
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https://coderanch.com/t/263733/java-programmer-SCJP/certification/has-relation-ship
 
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