Java tutorial
//package com.java2s; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Set; public class Main { public static List toList(Set set) { if (set == null) { return null; } if (set.size() == 0) return new ArrayList(); List list = new ArrayList(); Iterator itor = set.iterator(); while (itor.hasNext()) { Object obj = itor.next(); list.add(obj); } return list; } }