// Make an RE pattern to match almost any form (deamon, demon, etc.).
String patt = "d[ae]{1,2}mon"; // i.e., 1 or 2 'a' or 'e' any combo
// A test input.
String input = "Unix hath demons and deamons in it!";
System.out.println("Input: " + input);
// Run it from a RE instance and see that it works
Pattern r = Pattern.compile(patt);
Matcher m = r.matcher(input);
System.out.println("ReplaceAll: " + m.replaceAll("daemon"));
// Show the appendReplacement method
m.reset();
StringBuffer sb = new StringBuffer();
System.out.print("Append methods: ");
while (m.find()) {
m.appendReplacement(sb, "daemon"); // Copy to before first match,
// plus the word "daemon"
}
m.appendTail(sb); // copy remainder
System.out.println(sb.toString());
