How to cast generic List types in java?

Question

Well, I have a class Customer (no base class).

I need to cast from LinkedList to List. Is there any clean way to do this?

Just so you know, I need to cast it

Answer 1

If your list is of a generic type for eg

ArrayList strList = new ArrayList(); strList.add("String1"); Object o = strList;

then Following method should work

public  List getListObjectInBodyOfType(Class classz, Object body) {
    if(body instanceof List){
        List tempList = (List)body;
        if(tempList.size() > 0 && tempList.get(0).getClass().equals(classz)){
            return (List) body;
        }
    }
    return new ArrayList();
}

How to use it?

List strList1 = getListObjectInBodyOfType(String.class, o);

as I mentioned before it works if the Object contains generic list, this won't work if you pass a non-generic list with mixed type of elements