Scaricare files dal web con Java

Per scaricare files dal web con Java è sufficiente utilizzare un codice del tipo:

int size = 1024;

OutputStream os = null;

URLConnection URLConn = null;

InputStream is = null;

try {

URL fileUrl;

byte[] buf;

int ByteRead;

fileUrl = new URL(url);

os = new BufferedOutputStream(new FileOutputStream(dirPath + "\\" + filename));

URLConn = fileUrl.openConnection();

is = URLConn.getInputStream();

buf = new byte[size];

while ((ByteRead = is.read(buf)) != -1) {

os.write(buf, 0, ByteRead);

}

} catch (Exception e) {

e.printStackTrace();

} finally {

try {

is.close();

os.close();

} catch (IOException e) {

e.printStackTrace();

}

}