ArrayList to array
// An array: String[] strs = {"Apfel", "Birne", "Banane", "Pflaume"}; // Array to ArrayList: ArrayList<String> al = new ArrayList<String>(); for (int i=0; i < strs.length; i++) al.add(strs[i]); // ArrayList back to array: String[] strs2 = al.toArray(new String[0]);