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    <p>Create a class to hold your data objects:</p> <pre><code>private static final class Data { private final BigDecimal point; private final Date date; public Data(final String point, final String date) { this.point = new BigDecimal(point); this.date = new Date(Long.parseLong(date)); } @Override public String toString() { return "Data{" + "point=" + point + ", date=" + date + '}'; } } </code></pre> <p>Now parse the string using a regex pattern, building the <code>Data</code> objects as you go. I have used possessive matchers as the <code>String</code> is presumably quite long and you don't want the express engine to backtrack along it repeatedly trying to match.</p> <p>The <code>Data</code> can, as here, even parse the individual <code>String</code>s to the real data types.</p> <pre><code>public static void main(String[] args) { final String s = "[14.1,1363649400],[14.4,1363650300],[14.6,1363651200],[15.1,1363652100],[14.3,1363653000],[14.2,1363653900],[14.8,1363654800]"; final Pattern p = Pattern.compile("\\[([^,]++),(\\d++)\\]"); final Matcher matcher = p.matcher(s); final Collection&lt;Data&gt; datas = new LinkedList&lt;Data&gt;(); while (matcher.find()) { datas.add(new Data(matcher.group(1), matcher.group(2))); } for (final Data data : datas) { System.out.println(data); } } </code></pre> <p>Output:</p> <pre><code>Data{point=14.1, date=Fri Jan 16 19:47:29 GMT 1970} Data{point=14.4, date=Fri Jan 16 19:47:30 GMT 1970} Data{point=14.6, date=Fri Jan 16 19:47:31 GMT 1970} Data{point=15.1, date=Fri Jan 16 19:47:32 GMT 1970} Data{point=14.3, date=Fri Jan 16 19:47:33 GMT 1970} Data{point=14.2, date=Fri Jan 16 19:47:33 GMT 1970} Data{point=14.8, date=Fri Jan 16 19:47:34 GMT 1970} </code></pre> <p>Obviously you can put those <code>Data</code> into a <code>Map</code> or <code>Set</code> or whatever suits you.</p>
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