Convert Set to List without creating new List

Question

I am using this code to convert a Set to a List:

Map> mainMap = new HashMap<>();

for (int i         


        

Answer 1

I create simple static method:

public static  List convertSetToList(Set set)
{
    return new ArrayList(set);
}

... or if you want to set type of List you can use:

public static > List convertSetToList(Set set, Class clazz) throws InstantiationException, IllegalAccessException
{
    L list = clazz.newInstance();
    list.addAll(set);
    return list;
}