public static void main(String args[]) throws Exception {
URL hp = new URL("http://www.google.com");
HttpURLConnection hpCon = (HttpURLConnection) hp.openConnection();
// Display request method.
System.out.println("Request method is " +
hpCon.getRequestMethod());
// Display response code.
System.out.println("Response code is " +
hpCon.getResponseCode());
// Display response message.
System.out.println("Response Message is " +
hpCon.getResponseMessage());
// Get a list of the header fields and a set
// of the header keys.
Map<String, List<String>> hdrMap = hpCon.getHeaderFields();
Set<String> hdrField = hdrMap.keySet();
System.out.println("\nHere is the header:");
// Display all header keys and values.
for(String k : hdrField) {
System.out.println("Key: " + k +
" Value: " + hdrMap.get(k));
}
}
}
The output produced by the program is shown here. (Of course, the exact response returned
Request method is GET
Response code is 200
Response Message is OK
Here is the header:
Key: Set-Cookie Value:
[PREF=ID=4fbe939441ed966b:TM=1150213711:LM=1150213711:S=Qk81
WCVtvYkJOdh3; expires=Sun, 17-Jan-2038 19:14:07 GMT; path=/;
domain=.google.com]
Key: null Value: [HTTP/1.1 200 OK]
Key: Date Value: [Tue, 13 Jun 2006 15:48:31 GMT]
Key: Content-Type Value: [text/html]
Key: Server Value: [GWS/2.1]
Key: Transfer-Encoding Value: [chunked]
Key: Cache-Control Value: [private]
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