/*  GetURLInfo.java
 *
 *  This program uses the URLConnection class to display 
 *  information about a URL to the console.
 *
 *  Derived from "Java Examples in a Nutshell", O'Reilly, 1997.
 *
 *  Bruce M. Bolden
 *  April 22, 1998
 *  http://www.cs.uidaho.edu/~bruceb/
 */

import java.io.*;
import java.net.*;
import java.util.Date;


public class GetURLInfo
{
    /**  Create a URL object.  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>" );
        }
    }
    
    /**  Use the URLConnection class to get info about the URL  */
    
    public static void printInfo( URL url )
        throws IOException
    {
            //  Get URLConnection from the URL
        URLConnection c = url.openConnection();
            //  Open a connection to the URL
        c.connect();
        
            //  Display information about the URL contents
        //System.out.println("  Content Type:     " + c.getContentType() );
        info("  Content Type:     " + c.getContentType()      );
        info("  Content Encoding: " + c.getContentEncoding()  );
        info("  Content Length:   " + c.getContentLength()    );
        info("  Date:             " + new Date( c.getDate() ) );
        info("  Last Modified:    " + new Date( c.getLastModified() ) );
        info("  Expiration:       " + new Date( c.getExpiration()   ) );
        
            //  Show additional information for an HTTP connection
        if( c instanceof HttpURLConnection )
        {
            HttpURLConnection h = (HttpURLConnection)c;
            
            info("  Request Method:   " + h.getRequestMethod()    );
            info("  Response Message: " + h.getResponseMessage()  );
            info("  Response Code:    " + h.getResponseCode()     );
        }
    }
    
    static void info( String s )
    {
        System.out.println( s );
    }
}