Ex04_ReplaceAtag_3Feb2017

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Ex04_ReplaceAtag_3Feb2017 {
    public static void main (String[] args) throws IOException {

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String input = reader.readLine();
        Pattern pattern = Pattern.compile("<a (href=.*?)>(.*?)</a>");
        StringBuilder result = new StringBuilder();

        while (!"END".equals(input)) {
            result.append(input);
            result.toString().replace(" ", "");
            result.toString().replace("\t", "");

            input = reader.readLine();
        }

        String resultToString = result.toString();
        Matcher matcher = pattern.matcher(resultToString);
        while (matcher.find()) {
            System.out.println(resultToString.replace(matcher.group(), "[URL " + matcher.group(1) + "]" + matcher.group(2) + "[/URL]"));
        }
    }
}