SupertypeIncompatibleWithSubtype

SupertypeIncompatibleWithSubtype

SupertypeIncompatibleWithSubtype

A variable of a supertype cannot reference an object of a subtype

A variable of a supertype can reference an object of a subtype

Java

4.12.2 Variables of Reference Type

Inheritance Subtyping Type Reference

reference variable of a given type referring to object of a subtype

Programming Language

Notional Machine

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