need code help, assignment due today

[kris1976]

Not sure why my restocking fee is not displaying, there are no errors, it runs and displays Genre but the restocking fee does not display... ???
Assignment: Modify the Inventory Program by creating a subclass of the product class that uses one additional unique feature of the product you chose (for the CD subclass, you could use CD genre, for example). In the subclass, create a method to calculate the value of the inventory of a product with the same name as the method previously created for the product class. The subclass method should also add a 5% restocking fee to the value of the inventory of that product.
 Modify the output to display this additional feature you have chosen and the restocking fee.

import java.util.Scanner;
import java.util.Arrays;

public class InventoryProgramPart3 {

// main method begins program execution
public static void main(String args[]) {

// create Scanner to obtain input
Scanner input = new Scanner( System.in );

// display welcome message
System.out.println( "Welcome to Felt's Inventory!" );

// cd

cd[] cd = new cd[100]; // array of 100 cd

cd GeorgeStraight = new cd(1, "George Straight", 5, 14.00);
cd CarrieUnderwood = new cd(2, "Carrie Underwood", 4, 13.99);
cd FaithHill = new cd(3, "Faith Hill", 6, 15.00);
cd JoshTurner = new cd(4, "Josh Turner", 8, 12.99);
cd GarthBrooks = new cd(5, "Garth Brooks", 3, 11.99);

// display inventory one at a time

GeorgeStraight.showInventory();
CarrieUnderwood.showInventory();
FaithHill.showInventory();
JoshTurner.showInventory();
GarthBrooks.showInventory();

// sort cds by name
for ( int i = 0; i < args.length; i++ )
System.out.println( args[i] + "," );

double array[] = { 70.00, 55.96, 90.00, 103.92, 35.97 };
double total = 0;

// add each value to total
for ( int counter = 0; counter < array.length; counter++)
	total += array[ counter ];
System.out.printf( "\nTotal inventory value is: $%.2f\n", total );

System.out.println( "\nThank you for using Felt's Inventory\n" );

} // end main method
 
} // end class InventoryProgramPart3

class cd
{

public int cdItem;
public String cdArtist;
public int cdUnits;
public double cdPrice;

// set cd Item
public void setCdItem(int item) {
	this.cdItem = item;
} // end method set Cd Item

//return cd Item
public int getCdItem() {
	return cdItem;
} // end method get Cd Item

// set cd Artist
public void setCdArtist(String artist) {
	this.cdArtist = artist;
} // end method set Cd Artist

//return cd Artist
public String getCdArtist() {
	return cdArtist;
} // end method get cd Artist

// set cd Units
public void setCdUnits(int units) {
	this.cdUnits = units;
} // end method set Cd Units
 
//return cd in stock
public int getCdUnits() {
return cdUnits;
} //end method get Cd Units

public void setCdPrice(double price) {
	this.cdPrice = price;
} //end method set Cd Price

//return cd Price
public double getCdPrice() {
	return cdPrice;
} //end method get Cd Price

// calculate value of cd inventory
public double getValue()
{
return cdUnits * cdPrice;
}// end method value of cd inventory

// constructor
cd( int item, String artist, int units, double price )
{
cdItem = item;
cdArtist = artist;
cdUnits = units;
cdPrice = price;

} // end constructor

// display inventory
public void showInventory()
{
	System.out.println(); // blank line

System.out.println( "Cd Item: "+cdItem );
System.out.println( "Cd Artist: "+cdArtist );
System.out.println( "Units in Stock: "+cdUnits );
System.out.printf( "Unit Price: $%.2f", cdPrice );
 
genre cd = new genre
	( 1, "George Straight", 5, 14.00, "Country" );

System.out.println( "\nGenre: "+cd.getGenre() );

// value() method and display value
System.out.printf( "\nInventory value of "+cdArtist+ " is = $%.2f\n", getValue() );

} // end display inventory

} // end class cd

class genre extends cd
{
// holds cd genre
private String cdGenre;

// constructor
genre( int item, String artist, int units, double price, String genre )
{
	super( item, artist, units, price );
	cdGenre = genre;
} // end constructor

// set cd genre
public void setGenre( String genre )
{
	this.cdGenre = genre;
} // end method set cd genre

// return cd genre
public String getGenre()
{
	return cdGenre;
} // end method get cd genre

// add 5% restocking fee
public double getValue()
{
	return super.getValue() * 1.05;
} // end method return cd genre

// calculate restocking fee
public double getRestockingFee()
{
	return super.getValue() * .05;
} // end method caluclate restocking fee

// return String cdGenre
public String toString()
{
String formatString = "Genre: %s";
formatString += "Restocking Fee: $%.2f";
formatString = String.format( formatString, cdGenre, super.getValue() * 0.05 );
return( formatString + super.toString() );
} // end toString()

// display inventory
public void showInventory()
{
	super.showInventory();
System.out.println( toString() );

// Display value plus restocking fee
System.out.printf( "\nInventory value of "+cdArtist+ " is = $%.2f\n",
getRestockingFee() );

} // end method display inventory

} // end class genre

[WingedPanther]

Kris, please do not post Java questions in the JavaScript tutorials forum. Moved to the correct location.

[kris1976]

oh ok sorry, where is it suppose to go so I know for next time?

[kris1976]

I need to turn this assignment in tonight (Sun 6-21), can anyone help me figure out why the restocking fee is not displaying??? Any help would be greatly appreciated..

[WingedPanther]

oh ok sorry, where is it suppose to go so I know for next time?

Software development -> Java Help

[wim DC]

Am i too late?
I'm not on a computer with java so just looking at the Tostring method without testing.
So i will list some things that COULD be wrong.

It's been quite a while since i've used those %d, %f things (since C++). Are you sure the double symbol = %f? seems like float to me (i can be wrong tho). Maybe try %lf.

then, the super.getValue in the tostring allready contains "*0.05". After calling the method you do "*0.05" again. I don't know if this is intended.

Then i'm not sure (again ) but this might be something.

// calculate value of cd inventory
public double getValue()
{
return cdUnits * cdPrice;
}// end method value of cd inventory

from class cd. There you want to multiply an integer with a double.
quote from Java:Tutorials:Variables - GPWiki

The Java compiler is quite picky when it comes to types. Ints can only be multiplied by other ints, floats with floats, doubles with double and so on

So i would cast the int into a double first. if

(double)integer

does not work properly, use the doubleValue method: Integer.doubleValue Method

public class MyClass
{
    public static void main(String[] args)
    {
        Integer i = new Integer(123);

        System.out.println("The double value is: " + i.doubleValue());
   }
}
/*
Output:
The double value is: 123.0
*/

[kris1976]

well didn't end up getting very good grade, professor said i didn't use an array to store the info and didn't use a sort method, also said there is no method to determine amount of entire inventory... he said I need to fix this before doing part 4 which is due tomorrow. pLease help : ( I so afraid I am going to fail this class...

import java.util.Scanner;
import java.util.Arrays;

public class InventoryProgramPart3 {

// main method begins program execution
public static void main(String args[]) {

// create Scanner to obtain input
Scanner input = new Scanner( System.in );

// display welcome message
System.out.println( "Welcome to Felt's Inventory!" );

// cd

cd[] cd = new cd[100]; // array of 100 cd

cd GeorgeStraight = new cd(1, "George Straight", 5, 14.00);
cd CarrieUnderwood = new cd(2, "Carrie Underwood", 4, 13.99);
cd FaithHill = new cd(3, "Faith Hill", 6, 15.00);
cd JoshTurner = new cd(4, "Josh Turner", 8, 12.99);
cd GarthBrooks = new cd(5, "Garth Brooks", 3, 11.99);

// display inventory one at a time

GeorgeStraight.showInventory();
CarrieUnderwood.showInventory();
FaithHill.showInventory();
JoshTurner.showInventory();
GarthBrooks.showInventory();

// sort cds by name
for ( int i = 0; i < args.length; i++ )
System.out.println( args[i] + "," );

double array[] = { 70.00, 55.96, 90.00, 103.92, 35.97 };
double total = 0;

// add each value to total
for ( int counter = 0; counter < array.length; counter++)
	total += array[ counter ];
System.out.printf( "\nTotal inventory value is: $%.2f\n", total );

System.out.println( "\nThank you for using Felt's Inventory\n" );

} // end main method
 
} // end class InventoryProgramPart3

class cd
{

public int cdItem;
public String cdArtist;
public int cdUnits;
public double cdPrice;

// set cd Item
public void setCdItem(int item) {
	this.cdItem = item;
} // end method set Cd Item

//return cd Item
public int getCdItem() {
	return cdItem;
} // end method get Cd Item

// set cd Artist
public void setCdArtist(String artist) {
	this.cdArtist = artist;
} // end method set Cd Artist

//return cd Artist
public String getCdArtist() {
	return cdArtist;
} // end method get cd Artist

// set cd Units
public void setCdUnits(int units) {
	this.cdUnits = units;
} // end method set Cd Units
 
//return cd in stock
public int getCdUnits() {
return cdUnits;
} //end method get Cd Units

public void setCdPrice(double price) {
	this.cdPrice = price;
} //end method set Cd Price

//return cd Price
public double getCdPrice() {
	return cdPrice;
} //end method get Cd Price

// calculate value of cd inventory
public double getValue()
{
return cdUnits * cdPrice;
}// end method value of cd inventory

// constructor
cd( int item, String artist, int units, double price )
{
cdItem = item;
cdArtist = artist;
cdUnits = units;
cdPrice = price;

} // end constructor

// display inventory
public void showInventory()
{
	System.out.println(); // blank line

System.out.println( "Cd Item: "+cdItem );
System.out.println( "Cd Artist: "+cdArtist );
System.out.println( "Units in Stock: "+cdUnits );
System.out.printf( "Unit Price: $%.2f", cdPrice );
 
genre cd = new genre
	( 1, "George Straight", 5, 14.00, "Country" );

System.out.println( "\nGenre: "+cd.getGenre() );

// value() method and display value
System.out.printf( "\nInventory value of "+cdArtist+ " is = $%.2f\n", getValue() );

} // end display inventory

} // end class cd

class genre extends cd
{
// holds cd genre
private String cdGenre;

// constructor
genre( int item, String artist, int units, double price, String genre )
{
	super( item, artist, units, price );
	cdGenre = genre;
} // end constructor

// set cd genre
public void setGenre( String genre )
{
	this.cdGenre = genre;
} // end method set cd genre

// return cd genre
public String getGenre()
{
	return cdGenre;
} // end method get cd genre

// add 5% restocking fee
public double getValue()
{
	return super.getValue() * 1.05;
} // end method return cd genre

// calculate restocking fee
public double getRestockingFee()
{
	return super.getValue() * .05;
} // end method caluclate restocking fee

// return String cdGenre
public String toString()
{
String formatString = "Genre: %s";
formatString += "Restocking Fee: $%.2f";
formatString = String.format( formatString, cdGenre, super.getValue() * 0.05 );
return( formatString + super.toString() );
} // end toString()

// display inventory
public void showInventory()
{
	super.showInventory();
System.out.println( toString() );

// Display value plus restocking fee
System.out.printf( "\nInventory value of "+cdArtist+ " is = $%.2f\n",
getRestockingFee() );

} // end method display inventory

} // end class genre

[cdg10620]

I know what it's like to be in class and struggle with a problem. I am not going to solve this for you but I will give you a few pointers. Do some research on data structures and using arrays in Java. There are many sort methods you can use for this. Also, one of the best ways to learn programming is to sit down and work through the problem. Not post to a forum and expect someone to answer it for you.

I'm not ripping on you by any means. Just trying to be honest and help you learn. There is no better teacher than an IDE and a debugger. Keep working through it. It may take hours and hours to work through a piece of code, but when you are done you'll know what you're doing.

Another good motto to live by... "When in doubt... Google..."

Google "Data Structures Array Java" and you'll find hundreds of documents, tutorial websites, and forums. There is plenty of information. You just have to dig a little bit.

[kris1976]

Desperately needing help, got errors on the lines in red, must be same thing, it's where I import says class interface or enum expect at the 1st one, the others say illegal start of type and ; expected... I am at my wits end. I am sorry for being a big pain, I just need to get through this class, its the last programming class. Thanks in advance for any help.

import java.util.Scanner;
import java.util.Arrays;

public class InventoryProgramPart3 {

// main method begins program execution
public static void main(String args[]) {

// create Scanner to obtain input
Scanner input = new Scanner( System.in );

// display welcome message
System.out.println( "Welcome to Felt's Inventory!" );

// cd

cd[] cd = new cd[100]; // array of 100 cd

cd GeorgeStraight = new cd(1, "George Straight", 5, 14.00);
cd CarrieUnderwood = new cd(2, "Carrie Underwood", 4, 13.99);
cd FaithHill = new cd(3, "Faith Hill", 6, 15.00);
cd JoshTurner = new cd(4, "Josh Turner", 8, 12.99);
cd GarthBrooks = new cd(5, "Garth Brooks", 3, 11.99);

// display inventory one at a time

GeorgeStraight.showInventory(5);
CarrieUnderwood.showInventory(4);
FaithHill.showInventory(6);
JoshTurner.showInventory(8);
GarthBrooks.showInventory(3);

// sort cds by name
for ( int i = 0; i < args.length; i++ )
System.out.println( args[i] + "," );

double array[] = { 70.00, 55.96, 90.00, 103.92, 35.97 };
double total = 0;

// add each value to total
for ( int counter = 0; counter < array.length; counter++)
	total += array[ counter ];
System.out.printf( "\nTotal inventory value is: $%.2f\n", total );

System.out.println( "\nThank you for using Felt's Inventory\n" );

} // end main method
 
} // end class InventoryProgramPart3


import java.text.NumberFormat;

public class Stock {

private String cdArtist;
private int cdItem;
private int cdUnits;
private double cdPrice;

public Stock()
{

this.cdArtist = "";
this.cdItem = 0;
this.cdUnits = 0;
this.cdPrice = 0;

}

public Stock(Sring artist, int item, int units, double price)
{

this.cdArtist = artist;
this.cdItem = item;
this.cdUnits = units;
this.cdPrice = price;
}

public void setCdArtist(String artist)
{
	this.cdArtist = artist;
}

public void setCdPrice(double cdPrice)
{
	this.cdPrice = cdPrice;
}

public void setCdUnits (int units)
{
this.cdUnits = units;
}

public void setCdItem(int item)
{
this.cdItem = item;
}

public String getCdArtist()
{
	return this.cdArtist;
}

public int getCdItem()
{
	return this.cdItem;
}

public double getCdPrice()
{
	return this.cdPrice;
}

public int getCdUnits()
{
	return this.cdUnits;
}

public double calculateTotalCdValue()
{
	return getCdUnits()* getCdPrice();
}

public String toString()
{
            NumberFormat currencyFormat = NumberFormat.getCurrencyInstance();
        return"\nCdArtist: "+getCdArtist() + "\nCd Item: "+getCdItem()+"\nCd Price : "
                +currencyFormat.format(getCdPrice())
                +"\nCd Units: "+getCdUnits()
                +"\nValue of Inventory: "+currencyFormat.format(this.calculateTotalCdValue());

}


import java.text.NumberFormat;

public class StockSubClass extends Stock
{

	private String CdGenre;
	public StockSubClass()
{
	super();
	CdGenre = "";
}

public void setCdGenre(String genre)
{
	this.CdGenre = genre;
}

public String getCdGenre()
{
	return this.CdGenre;
}

public double calculateRestockFee()
{
	return (super.getCdPrice() * .05);
}

// total cd inventory value

public double calculateInventoryValue()
{
	return (super.getCdPrice()*super.getCdUnits() + calculateRestockFee() );
}

// total value of all inventory
        public static double getTotalInventoryValue(StockSubClass [] items)
{
            double tot = 0.0;
            
            for(int j = 0; j < items.length; j++)
            {
                tot += items[j].calculateInventoryValue();
            }
            return tot;
}
        

        
// override the toString function to display a single Item @Override

public String toString()
{
            NumberFormat currencyFormat = NumberFormat.getCurrencyInstance();
        return"\nCd Artist: "+super.getCdArtist() + "\nCd Item: "+super.getCdItem()+"\nCd Price : "
                +currencyFormat.format(super.getCdPrice())+"\nRestock Fee : "
                +currencyFormat.format(calculateRestockFee())+"\nCd Units: "+super.getCdUnits()+"\nGenre: "
                +getCdGenre()+"\nInventory Value: "+currencyFormat.format(this.calculateInventoryValue()) +"\n\n";
       
} // end method inventory

} // end class Stock  

import java.util.*;
import java.text.*;

public class StockInput
{

private StockSubClass [] cds;

// constructor

public StockInput (int numberOfCds)
{

cds = new StockSubclass[numberOfCds];
for(int i = 0; i < numberOfCds; i++)
cds[i] = new StockSubClass();
}

public StockSubClass[] inputCds()
{

cds[0].setCdArtist("George Straight");
cds[0].setCdUnits(5);
cds[0].setCdPrice(14.00);
cds[0].setCdItem(1);
cds[0].setCdGenre("Country");

cds[1].setCdArtist("Carrie Underwood");
cds[1].setCdUnits(4);
cds[1].setCdPrice(13.99);
cds[1].setCdItem(2);
cds[1].setCdGenre("Country");

cds[2].setCdArtist("Faith Hill");
cds[2].setCdUnits(6);
cds[2].setCdPrice(15.00);
cds[2].setCdItem(3);
cds[2].setCdGenre("Country");

cds[3].setCdArtist("Josh Turner");
cds[3].setCdUnits(8);
cds[3].setCdPrice(12.99);
cds[3].setCdItem(4);
cds[3].setCdGenre("Country");

cds[4].setCdArtist("Garth Brooks");
cds[4].setCdUnits(3);
cds[4].setCdPrice(11.99);
cds[4].setCdItem(5);
cds[4].setCdGenre("Country");

return (cds);
}

// Sort the Cd array by artist
public StockSubClass [] sortByCdArtist;
{

StockSubClass[] sorted = new StockSubClass[cds.length];
String [] artists = new String[cds.length];
for(int i = 0; i< cds.length; i++)
artists[i] = cds[i].getCdArtist();
Arrays.sort(artists);
int index = -1;
for(int i = 0; i< artists.length; i++)
{

index = this.searchByArtist(artists[i]);
if (index!= -1)
	soretd[i] = cds[index];
}
this.cds = sorted;
return (sorted);
}

// search a Cd by artist and return the cd index
private int searchByArtist(String artist)
{
for(int i = 0; i < cds.length; i++)
	if(artist.equals(cds[i].getCdArtist()))
	return i;
return -1;
}

}// end class StockInput
}

[WingedPanther]

Are these separate files?