Question

What is java.lang.Class<?>[] in java . Specifically what is <?>.

I am a beginner in java , I cannot figure out what is the meaning of <?>

Thanks,

Puneet

Answer 1

A type argument for a parameterized type is not limited to a concrete
class or interface. Java allows the use of type wildcards to serve as
type arguments for parameterized types. Wildcards are type arguments
in the form “?”, possibly with an upper or lower bound. Given that the
exact type represented by a wildcard is unknown, restrictions are
placed on the type of methods that may be called on object of the
parameterized type.

Source:
Generics In Java
Also:
Wildcards in Generics