import java.util.regex.Pattern;
import org.pureprogrammer.Utils;

public class RegEx2 {

	public static void main(String[] args) {
		final String s = "Four score and seven years ago...";
		System.out.println(Utils.join("", "Replace First 1: ", Pattern.compile("\\.\\.\\.").matcher(s).replaceFirst("!!!")));
		System.out.println(Utils.join("", "Replace First 2: ", Pattern.compile("\\b...\\b").matcher(s).replaceFirst("???")));
		System.out.println(Utils.join("", "Replace First 3: ", Pattern.compile("b.d").matcher(s).replaceFirst("???")));
		System.out.println(Utils.join("", "Replace First 4: ", Pattern.compile("(\\w+) (\\w+)").matcher(s).replaceFirst("$2 $1")));

		System.out.println(Utils.join("", "Replace All 1: ", Pattern.compile("\\b...\\b").matcher(s).replaceAll("???")));
		System.out.println(Utils.join("", "Replace All 2: ", Pattern.compile("(\\w+) (\\w+)").matcher(s).replaceAll("$2 $1")));
	}
}