BufferedReader is =
new BufferedReader(new InputStreamReader(System.in));
if (args.length != 1) {
System.err.println("Usage: MatchLines pattern");
System.exit(1);
}
Pattern patt = Pattern.compile(args[0]);
Matcher matcher = patt.matcher("");
String line = null;
while ((line = is.readLine()) != null) {
matcher.reset(line);
if (matcher.find()) {
System.out.println("MATCH: " + line);
}
}
