Recupérer le code source d'une adresse URL

Quelque chose du genre
URL url = new URL(" [ Lien ]");
InputStreamReader ipsr = new InputStreamReader(url.openStream());
BufferedReader br = new BufferedReader(ipsr);
String line = null;
StringBuffer buffer = new StringBuffer();
try {
while ((line = br.readLine()) != null) {
buffer.append(line).append('\n');
}
br.close();
}
catch (IOException e) {
e.printStackTrace();
}

Cdt