OpenCommercial.java

/* OpenCommercial.java.java */

import java.net.*;
import java.io.*;

/**  A class that provides a main function to read five lines of a commercial
 *   Web page and print them in reverse order, given the name of a company.
 */

class OpenCommercial {

    /** Prompts the user for the name X of a company (a single string), opens
     *  the Web site corresponding to www.X.com, and prints the first five lines
     *  of the Web page in reverse order.
     *  @param arg is not used.
     *  @exception Exception thrown if there are any problems parsing the
     *             user's input or opening the connection.
     */
    public static void main(String[] arg) throws Exception {

        BufferedReader keyboard;
        String inputLine;

        keyboard = new BufferedReader(new InputStreamReader(System.in));

        System.out.print("Please enter the name of a company (without spaces): ");
        System.out.flush();        /* Make sure the line is printed immediately. */
        inputLine = keyboard.readLine();

        String address = "http://www." + inputLine + ".com/";
        URL web = new URL(address);
        BufferedReader in = new BufferedReader(
                new InputStreamReader(web.openStream()));

        String input;
        int n = 0;
        String[] output = new String[5];
        while ((input = in.readLine()) != null && n < 5) {
            output[n] = input;
            n++;
        }
        in.close();

        for(int i = 0; i<5; i++){
            System.out.println(output[4-i]);
        }

    }
}