Here we go, another Java vs. Python comparison (I just can't help myself). This time it's about standard library usefulness in doing certain tasks. Fetching the contents of a URL should be a trivial one, but in Java, it's not. Especially if the contents of that URL are gzipped and use a nice charset such as UTF-8.
Java:
URL url = new URL("http://www.example.com/");
URLConnection conn = url.openConnection();
conn.connect();
InputStream in;
if (conn.getContentEncoding().equals("gzip")) {
in = new GZIPInputStream(conn.getInputStream());
}
else {
in = conn.getInputStream();
}
String charset = conn.getContentType();
BufferedReader reader;
if (charset.indexOf("charset=") != -1) {
charset = charset.substring(charset.indexOf("charset=") + 8);
reader = new BufferedReader(new InputStreamReader(in, charset));
}
else {
charset = null;
reader = new BufferedReader(new InputStreamReader(in));
}
StringBuilder builder = new StringBuilder();
String line = reader.readLine();
while (line != null) {
builder.append(line + '\n');
line = reader.readLine();
}
String content = builder.toString(); // FINALLY!
Python:
content = urllib2.urlopen("http://www.example.com/").read()
At first I though yeah, well, Java is probably older and wasn't designed to do such things very often. I was wrong. Java appeared in 1995, Python in 1991.
In retrospect, Java was heavy in implementation from other languages and Python was probably wasn't too mature for such a vast library. You can't treat programming languages like children who study right when they're born. I doubt python at the time had a function for fetching URL content, let alone popular usage of the HTTP header content type gzip.
ReplyDeleteI would think that the underlying python code does something similar. I could easily wrap the java code in a function.
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