How int.class argument work with getConstructor reflection api?

Class instance gets created in a per-type constant pool, when particular class(X) gets loaded.

javac compiles this syntax int.class to point to object that Integer.TYPE points to.

Below code, get access to parameterise(int) constructor of class X.

Class c = X.class;
Constructor cons = c.getConstructor(int.class);
cons.newInstance(10);

In the above code, I did not understand the role of int.class argument, under the hood. Why int.class is being passed as argument?