How to Convert the Stream of strings into ArrayList Integer

Question

I have a String st = "12 54 456 76ASD 243 646"
what I want to do is print it like this from the ArrayList<Integer>:
12
54
456
243
646
It should catch the "76ASD" exception as it contain String Character.
This is how I am doing, which it seems to work but when it reaches the 76ASD it catches the exception so it is not adding the rest to the Arraylist, therefore I could not print in sequence.
  public static void main(String[] args) {
        // TODO code application logic here
        getDatas(testString);
        for (int i = 0; i < at.size(); ++i) {
            System.out.println(at.get(i));
    private static ArrayList<Integer> getDatas(String aString) {
        StringTokenizer st = new StringTokenizer(aString);
        try {
            while (st.hasMoreTokens()) {
                String sts = "";
                sts = st.nextToken();
                at.add(Integer.parseInt(sts));
        } catch (Exception e) {
            System.out.println("Error: " + e);
        return at;
    }Please guide me where I am going
Thanks

Answer 1

paulcw wrote:
This is one of the few cases where I'd say catching an exception as part of the design is acceptable. When parsing, either something parses, or it doesn't. Using parseInt, we're parsing the string and using the result of the parse. By using a regular expression, we're parsing it twice, in two different ways, which may get out of sync. Not only that, if you have a more complicated case, like negative numbers and decimals, the regex gets really ugly.
I agree this is exactly the case where it is appropriate to try, catch, handle, move on. I sometimes wish there were an Integer.isValid(String) method, but even if there were, we'd call it, and if it returned true, we'd then call parseInt anyway, which would repeat the same work that isValid did. All it would buy us would be an if test instead of a try/catch.