If I have two classes:
Apple extends Fruit
I see sometimes there is:
Fruit ob= new Apple();
What is this, please?
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That is polymorphism https://docs.oracle.com/javase/tutorial/java/IandI/polymorphism.html – jmj Aug 20 '22 at 19:21
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1I'm not sure this is programming to an interface necessarily - could be plain old inheritance/polymorphism. – topsail Aug 20 '22 at 19:22
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@topsail -- yes. you are right. Dupe targets changed. – Hovercraft Full Of Eels Aug 20 '22 at 19:24