This does not work because generic classes does not belong to Reifiable Types.
The JLS about Array creation expression states :
It is a compile-time error if the [class type] does not denote a reifiable type (§4.7). Otherwise, the [class type] may name any named reference type, even an abstract class type (§8.1.1.1) or an interface type (§9).
The rules above imply that the element type in an array creation expression cannot be a parameterized type, other than an unbounded wildcard.
The definition of Reifiable Types is :
Because some type information is erased during compilation, not all types are available at run time. Types that are completely available at run time are known as reifiable types.
A type is reifiable if and only if one of the following holds:
It refers to a non-generic class or interface type declaration.
It is a parameterized type in which all type arguments are unbounded wildcards (§4.5.1).
It is a raw type (§4.8).
It is a primitive type (§4.2).
It is an array type (§10.1) whose element type is reifiable.
It is a nested type where, for each type T separated by a ".", T itself is reifiable.
For example, if a generic class X has a generic member class Y, then the type X.Y is reifiable because X is reifiable and Y is reifiable. The type X.Y
