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 found this working fine and useful to create a List from a Set.

ArrayList < String > L1 = new ArrayList < String > ();
L1.addAll(ActualMap.keySet());
for (String x: L1) {
    System.out.println(x.toString());
}