Adding comma separated strings to an ArrayList and vice versa

Question

How to add a comma separated string to an ArrayList? My string \"returnedItems\" could hold 1 or 20 items which I\'d like to add to my ArrayList \"selItemArrayList\".

<

Answer 1

String returnedItems = "a,b,c";
List sellItems = Arrays.asList(returnedItems.split(","));

Now iterate over the list and append each item to a StringBuilder:

StringBuilder sb = new StringBuilder();
for(String item: sellItems){
    if(sb.length() > 0){
        sb.append(',');
    }
    sb.append(item);
}
String result = sb.toString();