Generic question

[Shawn Kuenzler]

How come line 4 is syntactically wrong?

class Food{}
class Fruit extends Food{}
class Apple extends Fruit{}
class Pie<T super Apple>{
public static void main(String[] args){
Pie<Fruit> p = new Pie<Fruit>();
}
}

[Melle Lee]

A type variable for a generic class declaration use only the keyword "extends".

But the parameterized type can use both keywords "super" and "extends".

[Amarender Reddy]

can anyone give more explanation on this plz!!

cheers