How do you know if an explicit object casting is needed?

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If you assign a superclass object to a variable of a subclass's data type, you need to do explicit casting. For example:
Object a; Customer b; b = (Customer) a;
When you assign a subclass to a variable having a supeclass type, the casting is performed automatically.

2012-08-07, 2434👍, 0💬

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