Sub-List and Comma Separated String

Getting Sub-list from list and converting  List into comma separated String values

List<String> l = new ArrayList<String>();

 // Getting sublist from main list from-to index
System.out.println(l.subList(2, l.size())); // including, excluding

// Converting list into comma seperated values
String d = String.join(",", l);
System.out.println(d);