array & list in Java

// array slice
int[] slice = Arrays.copyOfRange(arr, start, end + 1);
// array to list
Integer[] spam = new Integer[] { 1, 2, 3 };
List<Integer> list = Arrays.asList(spam);
// add array to list
List<List<Integer>> res = new ArrayList<>();
res.add(Arrays.asList(new Integer[]{1,2,3}));
res.add(Arrays.asList(new Integer[]{1,2,3}));
// list to array
List<String> stockList = new ArrayList<String>();
stockList.add("stock1");
stockList.add("stock2");

String[] stockArr = new String[stockList.size()];
stockArr = stockList.toArray(stockArr);