4.4. Type Variables
A type variable is an unqualified identifier used as a type in class, interface, method, and constructor bodies.
A type variable is declared as a type parameter of a generic class declaration (§8.1.2), generic interface declaration (§9.1.2), generic method declaration (§8.4.4), or generic constructor declaration (§8.8.4).
TypeParameter: TypeVariable TypeBoundoptTypeBound: extends TypeVariable extends ClassOrInterfaceType AdditionalBoundListoptAdditionalBoundList: AdditionalBound AdditionalBoundList AdditionalBoundAdditionalBound: & InterfaceType
The scope of a type variable declared as a type parameter is specified in §6.3. Every type variable declared as a type parameter has a bound. If no bound is declared ...
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