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import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;
/**
* A class that displays information about a URL.
*/
public class GetURLInfo {
/** Use the URLConnection class to get info about the URL */
public static void printinfo(URL url) throws IOException {
URLConnection c = url.openConnection(); // Get URLConnection from URL
c.connect(); // Open a connection to URL
// Display some information about the URL contents
System.out.println(" Content Type: " + c.getContentType());
System.out.println(" Content Encoding: " + c.getContentEncoding());
System.out.println(" Content Length: " + c.getContentLength());
System.out.println(" Date: " + new Date(c.getDate()));
System.out.println(" Last Modified: " + new Date(c.getLastModified()));
System.out.println(" Expiration: " + new Date(c.getExpiration()));
// If it is an HTTP connection, display some additional information.
if (c instanceof HttpURLConnection) {
HttpURLConnection h = (HttpURLConnection) c;
System.out.println(" Request Method: " + h.getRequestMethod());
System.out.println(" Response Message: " + h.getResponseMessage());
System.out.println(" Response Code: " + h.getResponseCode());
}
}
/** Create a URL, call printinfo() to display information about it. */
public static void main(String[] args) {
try {
printinfo(new URL(args[0]));
} catch (Exception e) {
System.err.println(e);
System.err.println("Usage: java GetURLInfo <url>");
}
}
}
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