Java HTTP GET using HttpURLConnection

import java.net.HttpURLConnection;
import java.net.URLConnection;
import java.net.URL;
//....
  try {
    URL u = new URL(STR_URL);
    URLConnection uc = u.openConnection();
    HttpURLConnection httpuc = (HttpURLConnection)uc;
    httpuc.setRequestMethod("GET");

    in_stream  = con.getInputStream();
    out_stream = new FileOutputStream(STR_FILE);

    while (-1 != (len = in_stream.read(buffer))) {
      out_stream.write(buffer, 0, len);
    }

    in_stream.close();
    out_stream.close();

  }catch(Exception e){
    //..