jukebox.java

simulation of a jukebox using java

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

public class Jukebox extends HttpServlet {
    public void doPost(HttpServletRequest request,
                       HttpServletResponse response)
    throws ServletException, IOException {
    	
    	Song cancionA = new Song("Panchai Nirame" , "2:15" , "Tamil Pop" ,  		
    		"Alai Payuthey (2000)" , "A", "http://www.raaga.com/channels/tamil/movie/T0000209.html" ,
    	 false );
    	
    	Song cancionB = new Song("Bombay (Children of Combodia)" , "2:38", "Jazz", "Fred Anderson Quartet/1" , "B" ,
    		"http://www.epitonic.com/artists/fredandersonquartet.html#tracks" , false)	;
    		 
    	Song cancionC = new Song("A Dios Le Pido" ,	"1:50" , "Latin Pop" , "Juanes : Un Dia Normal/1" , "C" ,
    		"http://es.artists.mp3s.com/artist_song/2515/2515448.html" , false	);
    		
    	Vector lista = new Vector();
    	
    	lista.add(cancionA);
    	lista.add(cancionB);
    	lista.add(cancionC);
    	
    	   for(int i = 0; i < lista.size(); i++)
        {
            String a = request.getParameter(((Song)lista.elementAt(i)).getId());
            if(a != null){
            
                ((Song)lista.elementAt(i)).getSelected(true);
            }
        }

		 displayHtml(lista, response);
    }

    public void displayHtml(Vector lista, HttpServletResponse response)
        throws IOException
    {
        response.setContentType("text/html");
        PrintWriter printwriter = response.getWriter();
        HtmlPage htmlpage = new HtmlPage();
        htmlpage.setTitle("Tocadiscos");
        htmlpage.setBackgroundColor("#9966FF");
        htmlpage.addText("<H1>Tocadiscos</H1>");
        htmlpage.addText("<FORM action='/servlet/Jukebox' method='post'>");
        htmlpage.addText("<H4>Escoge tus rolas</H4>");
        HtmlTable htmltable = new HtmlTable(10);
        htmltable.startRow();
        htmltable.addCell("<B>Titulo</B>");
        htmltable.addCell("<B>Duracion(min)</B>");
        htmltable.addCell("<B>Categoria</B>");
        htmltable.addCell("<B>Album/Pista</B>");
        htmltable.endRow();
        for(int i = 0; i < lista.size(); i++)
        {
            htmltable.startRow();
            String a = "<INPUT type='checkbox' name='" + ((Song)lista.elementAt(i)).getId() + "' value='" + ((Song)lista.elementAt(i)).getTitle() + "'";
            if(((Song)lista.elementAt(i)).getSelected())
                a = a + " checked>";
            else
                a = a + ">";
            a = a + ((Song)lista.elementAt(i)).getTitle();
            htmltable.addCell(a);
            htmltable.addCell(((Song)lista.elementAt(i)).getDuration());
            htmltable.addCell(((Song)lista.elementAt(i)).getCategory());
            htmltable.addCell(((Song)lista.elementAt(i)).getAlbumTrack());
            htmltable.addCell("<A href='" + ((Song)lista.elementAt(i)).getLink() + "'>Play</A>");
            htmltable.endRow();
        }

        htmlpage.addText(htmltable.buildHtml());
        htmlpage.addText("<BR><BR><BR><BR>");
        htmlpage.addText("<INPUT type='submit' name='UserRequest' value='My Playlist'>");
        htmlpage.addText("<BR><BR><BR><BR>");
        htmlpage.addText("<TEXTAREA name='playList' rows='10' cols='80' readonly>");
        for(int j = 0; j < lista.size(); j++)
            if(((Song)lista.elementAt(j)).getSelected())
                htmlpage.addText(((Song)lista.elementAt(j)).getTitle() + "\t" + ((Song)lista.elementAt(j)).getDuration() + "\t" + ((Song)lista.elementAt(j)).getCategory() + "\n" + ((Song)lista.elementAt(j)).getAlbumTrack() + "\n\n");

        htmlpage.addText("</TEXTAREA>");
        htmlpage.addText("</FORM>");
        printwriter.print(htmlpage.buildHtml());
        printwriter.flush();
        printwriter.close();
    	
    	
    		
    		
    		
    		
    		
    }
}