// The RE pattern
RE patt = new RE("[A-Za-z][a-z]+");
// A FileReader (see the I/O chapter)
Reader r = new FileReader(args[0]);
// The RE package ReaderCharacterIterator, a "front end"
// around the Reader object.
CharacterIterator in = new ReaderCharacterIterator(r);
int end = 0;
// For each match in the input, extract and print it.
while (patt.match(in, end)) {
// Get the starting position of the text
int start = patt.getParenStart(0);
// Get ending position; also updates for NEXT match.
end = patt.getParenEnd(0);
// Print whatever matched.
Debug.println("match", "start=" + start + "; end=" + end);
// Use CharacterIterator.substring(offset, end);
System.out.println(in.substring(start, end));
}
