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Java

Posted by TC Ooi
TC Ooi
5,858 Points

When do we need downcasting actually?

I am starting to figure out how to use downcasting in java object, but i don't know when should I include downcasting in my program and why ?

1 Answer

Jim Chemmalakuzhy
Jim Chemmalakuzhy
8,472 Points
Jim Chemmalakuzhy
Jim Chemmalakuzhy
8,472 Points

The main use I see is that instead of having to create methods to handle every object type you can use the same method for all the objects in the class hierarchy. This is because the compiler only checks the Reference type when it compiles the code but since the object doesn't change it will pull the subclass method instead of the super class'. Hope that helped.