URL的使用 從網絡地址上的網頁下載到本機上

URL url = new URL(http://....../b.html);
InputStream in = url.openStream();
FileOutPutStream fos = new FileOutputStream("e://a.html");
int t;
while((t = in.read()) != -1) {
    fos.write((char)t);
}
fos.close();
in.close();