explicitly subclass typing.Generic instead

Unfortunately isinstance will fail on some things
such as typing.Collection. Using typing.Generic
will prevent confusion.

jpype/_jarray.pyi

@@ -24,7 +24,7 @@ __all__ = ['JArray']
 T = typing.TypeVar('T')
 
 
-class JArray(typing.Collection[T], typing.Reversible[T]):
+class JArray(typing.Generic[T]):
 
     def __new__(cls, tp: typing.Type[T], dims=1) -> JArray[T]:
         ...
@@ -39,10 +39,6 @@ class JArray(typing.Collection[T], typing.Reversible[T]):
     def __iter__(self) -> typing.Iterator[T]:
         ...
 
-    def __contains__(self, item: T) -> bool:
-        # this is implicitly implemented
-        ...
-
     def __reversed__(self) -> typing.Iterator[T]:
         ...
 
@@ -61,6 +57,3 @@ class JArray(typing.Collection[T], typing.Reversible[T]):
     @typing.overload
     def __setitem__(self, index: slice, value: typing.Sequence[T]):
         ...
-
-    def __class_getitem__(cls, key: T) -> typing.Type[JArray[T]]:
-        ...