Bounds are not propagated in extended class

Question

Have a look on this small example, 3 classes A, B and C.
B and A are generics class,
B herits of A and there is a lower bounds on the class T in B (T extends C)
public class A<T> {
     public A() {}
     public T foo()
public class B<T extends C> extends A<T> {
     public B() {}
     public static void main(String[] args) {
          B inst = new B();
          C cInst = inst.foo3();  //problem : it does'nt work !!
public class C {
     public C() {}
}The problem is in the main of the class B, the compiler says : "Cannot convert from Object to C".
My reasoning :
There is a type constraint (a lower bound) on T in the class B, so "T extends C" in the class B, so "T extends C" in the class A for an instance of the class B. The call to the method foo() does answer an object which class extends class C !!
Someone has an explanation, it's abnormal or I should set the parameters of javac.
thank you.

Answer 1

Ok my examples were wrong !!
Have a look on this example (smaller and better !)
B and A are generics class,
B herits of A and there is a lower bounds on the class T in A "T extends C"
public class A<T extends C> {
     public A() {}
     public T foo()
     public void foo2() {
          C cinst = foo(); //no problem : it works
public class B<T> extends A<T> {
     public B() {...}
     public void foo3() {
          C cinst = foo(); //error : "cannot convert T to C"
}The type constraint "<T extends C>" of the class "A" is not propagated to the class "B" !!
I have to add the constraint <T extends C> to the class B like this
public class B<T extends C> extends A<T> {...}However, it's inevitably like this !