java regex quantifiers

Question

I have a string like

String string = \"number0 foobar number1 foofoo number2 bar bar bar bar number3 foobar\";

I need a regex to give me th

Answer 1

Pattern pattern = Pattern.compile("\\w+\\d(\\s\\w+)\1*");
Matcher matcher = pattern.matcher(string);

while (matcher.find()) {
    System.out.println(matcher.group());
}