String urlString = "some url";
URL url = new URL(urlString);
BufferedInputStream arjInputStream = new BufferedInputStream(url.openStraem());
String path = "some path";
FileOutputStream fos = new FileOutputStream(path);
final int chunk = 2048;
java.io.BufferedOutputStream bout = new BufferedOutputStream(fos,chunk);
byte[] data = new byte[chunk];

int x=0;
try {
    watch.start("Read from stream");
    while((x=arjInputStream.read(data,0,chunk ))>=0)
    {
        bout.write(data,0,x);
    }
} catch (Exception e) {
    System.out.println("Ошибка при сохранении архива на диск (saperion): " + e.getMessage());
} finally {
    bout.close();
    arjInputStream.close();
}