How to add features missing from the Java regex implementation?

Question

I\'m new to Java. As a .Net developer, I\'m very much used to the Regex class in .Net. The Java implementation of Regex (Regular Expressions) is no

Answer 1

One can rant, or one can simply write:

public class Regex {

    /**
     * @param source 
     *        the string to scan
     * @param pattern
     *        the regular expression to scan for
     * @return the matched 
     */
    public static Iterable matches(final String source, final String pattern) {
        final Pattern p = Pattern.compile(pattern);
        final Matcher m = p.matcher(source);
        return new Iterable() {
            @Override
            public Iterator iterator() {
                return new Iterator() {
                    @Override
                    public boolean hasNext() {
                        return m.find();
                    }
                    @Override
                    public String next() {
                        return source.substring(m.start(), m.end());
                    }    
                    @Override
                    public void remove() {
                        throw new UnsupportedOperationException();
                    }
                };
            }
        };
    }

}

Used as you wish:

public class RegexTest {

    @Test
    public void test() {
       String source = "The colour of my bag matches the color of my shirt!";
       String pattern = "colou?r";
       for (String match : Regex.matches(source, pattern)) {
           System.out.println(match);
       }
    }
}