The problem is that you've declared Integer
as a generic type parameter for the SortedList
class. So when you refer to Integer
as a parameter of the intMethod
method, that means the type parameter, not the java.lang.Integer
type which I suspect you meant. I think you want:
class SortedList extends LinkedList<Integer> {
int intMethod(Integer integerObject){
return integerObject;
}
}
This way a SortedList
is always a list of integers, which I suspect is what you were trying to achieve. If you did want to make SortedList
a generic type, you would probably want:
class SortedList<T> extends LinkedList<T> {
int intMethod(Integer integerObject){
return integerObject;
}
}