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Thread: What's wrong with my code? (Music store)

  1. #1
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    Exclamation What's wrong with my code? (Music store)

    I'm creating a music store in Java, with everything categorized into genre. Each CD has a fixed quantity, which should decrease every time someone buys something. I tried, and failed epicly. Please help. My code:

    import java.io.*;
    public class CDMart
    {
    InputStreamReader read=new InputStreamReader(System.in);
    BufferedReader in=new BufferedReader(read);
    int GenreSelect;
    int SerialNo[]=new int [25];
    String Genre[]=new String[25];
    String ArtistName[]=new String[25];
    String AlbumName[]=new String[25];
    double Cost[]=new double[25];
    int Quantity[]=new int[25];
    int cart=0;
    int TotalCost=0;
    int country=0;
    int hiphop=0;
    int rock=0;
    int dubstep=0;
    int pop=0;

    int a1[]=new int[ 25];
    String b1[]=new String[ 25];
    String c1[]=new String[ 25];
    String d1[]=new String[ 25];
    double e1[]=new double[ 25];
    int f1[]=new int[ 25];
    void Genre_Select()throws IOException
    {

    System.out.println("Enter the number code of your desired genre to begin");
    System.out.println("1 \t Country");
    System.out.println("2 \t Hip-Hop");
    System.out.println("3 \t Pop");
    System.out.println("4 \t Dubstep");
    System.out.println("5 \t Rock");
    GenreSelect=Integer.parseInt(in.readLine());

    Display_Albums(GenreSelect);
    }

    void Display_Albums(int a)throws IOException
    {
    int i;int b=0, c=0, d=0, e=0, f=0;
    CDMart ob=new CDMart();
    if(a==1)
    {

    System.out.println("Albums available in Country genre are: ");
    System.out.println("Sr.No. \t Genre \t Artist Name \t Album Name \t Cost \t Quantity");
    for(i=0;i<5;i++)
    {
    b++;
    System.out.println(b+"\t Country"+ArtistName[i]+" \t "+AlbumName[i]+" \t "+Cost[i]+"\t"+Quantity[i]);
    }
    ob.Country();
    }
    else if(a==2)
    {

    System.out.println("Albums available in Hip-Hop genre are: ");
    System.out.println("Sr.No. \t Genre \t Artist Name \t Album Name \t Cost \t Quantity");
    for(i=5;i<10;i++)
    {
    c++;
    System.out.println(c+" \t Hip-Hop"+ArtistName[i]+" \t "+AlbumName[i]+" \t "+Cost[i]+" \t "+Quantity[i]);
    }
    Hiphop();
    }
    else if(a==3)
    {

    System.out.println("Albums available in Pop genre are: ");
    System.out.println("Sr.No. \t Genre \t Artist Name \t Album Name \t Cost \t Quantity");
    for(i=5;i<10;i++)
    {
    d++;
    System.out.println(d+"\t Pop"+ArtistName[i]+" \t "+AlbumName[i]+" \t "+Cost[i]+" \t "+Quantity[i]);
    }
    Pop();
    }
    else if(a==4)
    {

    System.out.println("Albums available in Dubstep genre are: ");
    System.out.println("Sr.No. \t Genre \t Artist Name \t Album Name \t Cost \t Quantity");
    for(i=5;i<10;i++)
    {
    e++;
    System.out.println(e+" \t Dubstep"+ArtistName[i]+" \t "+AlbumName[i]+" \t "+Cost[i]+" \t "+Quantity[i]);
    }
    Dubstep();
    }
    else
    {

    System.out.println("Albums available in Rock genre are: ");
    System.out.println("Sr.No. \t Genre \t Artist Name \t Album Name \t Cost \t Quantity");
    for(i=5;i<10;i++)
    {
    f++;
    System.out.println(f+" \t Rock"+ArtistName[i]+" \t "+AlbumName[i]+" \t "+Cost[i]+" \t "+Quantity[i]);
    }
    Rock();
    }
    }

    CDMart()
    {

    int i, b=0;
    for(i=0;i<25;i++)
    {
    if(i<5)
    {
    Genre[i]="Country";
    }
    else if(i>=5&&i<10)
    {
    Genre[i]="Hip-Hop";
    }
    else if (i>=10&&i<15)
    {
    Genre[i]="Pop";
    }
    else if(i>=15&&i<20)
    {
    Genre[i]="Dubstep";
    }
    else if(i>=20&&i<25)
    {
    Genre[i]="Rock";
    }

    SerialNo[i]=i+1;
    Quantity[i]=25;
    }
    ArtistName[0]="Jamie Johnson";
    AlbumName[0]="That Lonesome Song";
    Cost[0]=200;
    ArtistName[1]="Tim McGraw";
    AlbumName[1]="Live like You Were Dying";
    Cost[1]=200;
    ArtistName[2]="Alan Jackson";
    AlbumName[2]="Drive";
    Cost[2]=250;
    ArtistName[3]="Alison Krauss";
    AlbumName[3]="Raising Sand";
    Cost[3]=300;
    ArtistName[4]="Brad Paisley";
    AlbumName[4]="Mud On The Tires";
    Cost[4]=250;
    ArtistName[5]="Tupac Shakur";
    AlbumName[5]="Keep Ya Head Up";
    Cost[5]=200;
    ArtistName[6]="Wu-Tang Clan";
    AlbumName[6]="Enter the Wu-Tang(36 Chambers)";
    Cost[6]=300;
    ArtistName[7]="Public Enemy";
    AlbumName[7]="It Takes a Nation of Millions To Hold Us Back";
    Cost[7]=350;
    ArtistName[8]="Common Sense";
    AlbumName[8]="Ressurection";
    Cost[8]=200;
    ArtistName[9]="Notorious B.I.G";
    AlbumName[9]="Ready To Die";
    Cost[9]=250;
    ArtistName[10]="David Bowie";
    AlbumName[10]="Ziggy Stardust and the Spiders From Mars";
    Cost[10]=260;
    ArtistName[11]="ABBA";
    AlbumName[11]="Arrival";
    Cost[11]=320;
    ArtistName[12]="Jeff Buckley";
    AlbumName[12]="Grace";
    Cost[12]=340;
    ArtistName[13]="Michael Jackson";
    AlbumName[13]="Thriller";
    Cost[13]=350;
    ArtistName[14]="Lana Del Rey";
    AlbumName[14]="Born To Die";
    Cost[14]=270;
    ArtistName[15]="Oneiric";
    AlbumName[15]="Boxcutter";
    Cost[15]=200;
    ArtistName[16]="Pinch";
    AlbumName[16]="Underwater Dancehall";
    Cost[16]=240;
    ArtistName[17]="Skream";
    AlbumName[17]="Skream";
    Cost[17]=300;
    ArtistName[18]="Skrillex";
    AlbumName[18]="Scary Monsters and Nice Sprites";
    Cost[18]=240;
    ArtistName[19]="Burial";
    AlbumName[19]="Untrue";
    Cost[19]=250;
    ArtistName[20]="U2";
    AlbumName[20]="The Joshua Tree";
    Cost[20]=300;
    ArtistName[21]="The Beatles";
    AlbumName[21]="Rubber Soul";
    Cost[21]=250;
    ArtistName[22]="Pink Floyd";
    AlbumName[22]="Dark Side of the Moon";
    Cost[22]=200;
    ArtistName[23]="Nirvana";
    AlbumName[23]="Nevermind";
    Cost[23]=300;
    ArtistName[24]="Led Zeppelin";
    AlbumName[24]="Physical Graffiti";
    Cost[24]=250;

    }

    void Country()throws IOException
    {
    CDMart ob=new CDMart();
    System.out.println("Enter serial number of desired album");
    int AlbumSelect=Integer.parseInt(in.readLine());
    String c;int i;
    System.out.println("Enter quantity");
    int qt=Integer.parseInt(in.readLine());
    for(i=0;i<25;i++)
    {
    if(qt>Quantity[i])
    {
    System.out.println("Reenter quantity between 1 to "+Quantity[i]);
    qt=Integer.parseInt(in.readLine());
    }
    if(AlbumName[AlbumSelect-1]==AlbumName[i])
    {
    c=AlbumName[i]; country++;
    cart(i+1,"Country",ArtistName[i],AlbumName[i],Cost[i],(Quantity[i]-1));
    break;
    }
    }
    System.out.println("Do you wish to buy any more albums from this genre? Press 1 for yes, 2 for shopping from another genre, and 3 for cart");
    int a=Integer.parseInt(in.readLine());
    if(a==1)
    {
    Country();
    }
    else if(a==2)
    {
    System.out.println("You have made "+country+"purchases from this genre");
    Genre_Select();
    }
    else
    {

    checkout();
    }
    }

    void Hiphop()throws IOException
    {
    CDMart ob=new CDMart();
    System.out.println("Enter serial number of desired album");
    int AlbumSelect=Integer.parseInt(in.readLine());
    String c;
    int i;
    System.out.println("Enter quantity");
    int qt=Integer.parseInt(in.readLine());
    for(i=0;i<25;i++)
    {
    if(qt>Quantity[i])
    {
    System.out.println("Reenter quantity between 1 to "+Quantity[i]);
    qt=Integer.parseInt(in.readLine());
    }
    if(AlbumName[AlbumSelect-1]==AlbumName[i])
    {
    c=AlbumName[i];hiphop++;
    cart(i+1,"Hiphop",ArtistName[i],AlbumName[i],Cost[i],(Quantity[i]-1));
    break;
    }
    }
    System.out.println("Do you wish to buy any more albums from this genre? Press 1 for yes, 2 for shopping from another genre, and 3 for cart");
    int a=Integer.parseInt(in.readLine());
    if(a==1)
    {
    Hiphop();
    }
    else if(a==2)
    {
    System.out.println("You have made "+hiphop+"purchases from this genre");
    Genre_Select();
    }
    else
    {

    checkout();
    }

    }

    void Pop()throws IOException
    {
    CDMart ob=new CDMart();
    System.out.println("Enter serial number of desired album");
    int AlbumSelect=Integer.parseInt(in.readLine());
    String c;
    System.out.println("Enter quantity");
    int qt=Integer.parseInt(in.readLine());
    int i;
    for(i=0;i<25;i++)
    {
    if(qt>Quantity[i])
    {
    System.out.println("Reenter quantity between 1 to "+Quantity[i]);
    qt=Integer.parseInt(in.readLine());
    }
    if(AlbumName[AlbumSelect-1]==AlbumName[i])
    {
    c=AlbumName[i];pop++;
    cart(i+1,"Pop",ArtistName[i],AlbumName[i],Cost[i],(Quantity[i]-qt));
    break;
    }
    }
    System.out.println("Do you wish to buy any more albums from this genre? Press 1 for yes, 2 for shopping from another genre, and 3 for cart");
    int a=Integer.parseInt(in.readLine());
    if(a==1)
    {
    Pop();
    }
    else if(a==2)
    {
    System.out.println("You have made "+pop+"purchases from this genre");
    Genre_Select();
    }
    else
    {
    checkout();
    }

    }

    void Dubstep()throws IOException
    {
    CDMart ob=new CDMart();
    System.out.println("Enter serial number of desired album");
    int AlbumSelect=Integer.parseInt(in.readLine());
    String c;
    System.out.println("Enter quantity");
    int qt=Integer.parseInt(in.readLine());
    int i;
    for(i=0;i<25;i++)
    {
    if(qt>Quantity[i])
    {
    System.out.println("Reenter quantity between 1 to "+Quantity[i]);
    qt=Integer.parseInt(in.readLine());
    }
    if(AlbumName[AlbumSelect-1]==AlbumName[i])
    {
    c=AlbumName[i];dubstep++;
    cart(i+1,"Dubstep",ArtistName[i],AlbumName[i],Cost[i],(Quantity[i]-qt));
    break;
    }
    }
    System.out.println("Do you wish to buy any more albums from this genre? Press 1 for yes, 2 for shopping from another genre, and 3 for checkout");
    int a=Integer.parseInt(in.readLine());
    if(a==1)
    {
    Dubstep();
    }
    else if(a==2)
    {
    System.out.println("You have made "+dubstep+"purchases from this genre");
    Genre_Select();
    }
    else
    {

    checkout();
    }
    }

    void Rock()throws IOException
    {
    CDMart ob=new CDMart();
    System.out.println("Enter serial number of desired album");
    int AlbumSelect=Integer.parseInt(in.readLine()); String c;
    System.out.println("Enter quantity");
    int qt=Integer.parseInt(in.readLine());int i;
    for(i=0;i<25;i++)
    {
    if(qt>Quantity[i])
    {
    System.out.println("Reenter quantity between 1 to "+Quantity[i]);
    qt=Integer.parseInt(in.readLine());
    }
    if(AlbumName[AlbumSelect-1]==AlbumName[i])
    {
    c=AlbumName[i]; rock++;
    cart(i+1,"Rock",ArtistName[i],AlbumName[i],Cost[i],(Quantity[i]-qt));
    break;
    }
    }
    System.out.println("Do you wish to buy any more albums from this genre? Press 1 for yes, 2 for shopping from another genre, and 3 for cart");
    int a=Integer.parseInt(in.readLine());
    if(a==1)
    {
    ob.Rock();
    }
    else if(a==2)
    {
    System.out.println("You have made "+rock+"purchases from this genre");
    Genre_Select();
    }
    else
    {
    ob.checkout();

    }

    }

    void cart(int a,String b, String c, String d, double e, int f)
    {

    int i;

    for(i=cart;i< 25;i++)
    {
    a1[i]=a;
    b1[i]=b;
    c1[i]=c;
    d1[i]=d;
    e1[i]=e;
    f1[i]=f;
    System.out.println(a1[i]+" "+b1[i]+" "+c1[i]+" "+d1[i]+" "+e1[i]);
    TotalCost=TotalCost+f;
    cart++;
    }

    }

    void checkout()
    {
    System.out.println("Your bill is:"); int i;
    System.out.println("Sr.No \t Genre \t Artist Name \t Album Name \n Cost \n Quantity");
    for(i=0;i<10;i++)
    {
    System.out.println(a1[i]+" \t "+b1[i]+" \t "+c1[i]+" \t "+d1[i]+" \t "+e1[i]+" \t "+f1[i]);
    }
    System.out.println("Your total cost is Rs. "+TotalCost);
    }

    void main()throws IOException
    {
    CDMart ob=new CDMart();
    ob.Genre_Select();
    }
    }


  2. #2
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    Default Re: What's wrong with my code? (Music store)

    Haha, that's a lot of code to look at.

    I don't know what's wrong with it, but I'd recommend you edit / repost it using the CODE tags so it looks much more readable.

    Also might help if you posted the error messages you're getting.

  3. #3
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    Default Re: What's wrong with my code? (Music store)

    Please post your code in code tags (or other formatting tags). You can learn about that in the Announcements at the top of the page while I look at your code.

    --- Update ---

    Is the main() method included in the mass of code you posted supposed to be THE main() method? If so, the method signature is wrong. If not, is there another "driver" program to run/test your program?

  4. #4
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    Default Re: What's wrong with my code? (Music store)

    Quote Originally Posted by GregBrannon View Post
    Please post your code in code tags (or other formatting tags). You can learn about that in the Announcements at the top of the page while I look at your code.

    --- Update ---

    Is the main() method included in the mass of code you posted supposed to be THE main() method? If so, the method signature is wrong. If not, is there another "driver" program to run/test your program?
    ya, it's THE main()
    why is the signature wrong?

  5. #5
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    Default Re: What's wrong with my code? (Music store)

    You should know this. It has to be static and void, and with minor variations (but why?), should look like:

    public static void main( String[] args )

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