/**
 * A concrete class extends AbstractRead
 * This class can read HTML from a HTTP URL
 */
import java.io.*;
import java.net.*;

public class ReadHtml extends AbstractRead {
 private URLConnection conn;
 private BufferedReader in;
 
 public ReadHtml() {
 }
 public ReadHtml(String s) {
 resource = s;
 }

 public boolean open() {
 try {
 URL url = new URL(resource);
 conn = url.openConnection();
 in = new BufferedReader (
 new InputStreamReader(conn.getInputStream()));
 } catch (MalformedURLException e) {
 System.out.println("Uable to connect URL:" + resource);
 return false;
 } catch (IOException e) {
 System.out.println("IOExeption when connecting to URL" + resource);
 return false;
 }
 return true;
 }
 protected void readContent() {
 try {
 if(in != null) {
 String str;
 while((str = in.readLine()) != null) {
 System.out.println(str); 
 }
 }
 } catch(IOException e) {
 System.out.println("Read file error !");
 }
 }
 protected void close() {
 if(in != null) {
 try {
 in.close();
 } catch(IOException e) {
 System.out.println("IO error !");
 }
 }
 }
 
}