Find and display hyperlinks contained within a web page : HTML Parser « Network « Java Tutorial

1. Java Tutorial
2. Network
3. HTML Parser

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String[] arguments)throws Exception {
    StringBuffer output = new StringBuffer();

    FileReader file = new FileReader("a.htm");
    BufferedReader buff = new BufferedReader(file);
    boolean eof = false;
    while (!eof) {
      String line = buff.readLine();
      if (line == null)
        eof = true;
      else
        output.append(line + "\n");
    }
    buff.close();

    String page = output.toString();
    Pattern pattern = Pattern.compile("<a.+href=\"(.+?)\"");
    Matcher matcher = pattern.matcher(page);
    while (matcher.find()) {
      System.out.println(matcher.group(1));
    }
  }

}