Java (programming) heeeelp

Pm me the code my H will make it work.

hth

If you can't pm me let me know will briefly post my email ad

Thanks. I've not had much luck with the PM so I'll just post it here if it's OK?

I have an empty class wrapper for a class called StockItem which will be a stock management system, and this is the instructions I've been given:

This class StockItem is part of a stock management system, and is to have the following fields:

• description: a String describing the StockItem type
• quantity: an int giving the number of the StockItem in stock
• price: an int giving the current (sale) price (in pence)

Declare these fields, making them all private, and check that StockItem still compiles without any errors.

When a StockItem object is created, its description and price are provided by its creator, but the quantity always starts at zero.

Okaaay, so I have written this:

public class StockItem
{
private String description;
private int quantity;
private int price;

public StockItem(String item, int pence)
{
description = item;
quantity = 0;
price = pence;
}

}

It compiles OK but when I create a new object of the class, it doesn't do what I expect and doesn't let me enter my own item of stock or price. It says Error - cannot find symbol variable Baked beans (or whatever item I entered).

I'm off to get a curry in a min so will check back in a bit. Thank yooou kind people. I am finding studying on my own a bit lonely and frustrating - if you get stuck, you're just stuck, so there's no point thinking "Right, I'll get a good 3 hours done tonight" because you just can't. Sorry, I'm ranting on now.

The constructer is fine, the code creating the object looks as though it may be wrong if you send me the whole code I will have a look. Also how does your code retrieve the values, you need methods to retrieve the data (because they are private)

MrJam

This is an example of a working self standing application, but it depends on the rest of your code as to whether this solves your problem so if you send the code I will take a look.


public class StockItem
{
private String description;
private int quantity;
private int price;
public StockItem(String description, int price)
{
this.description = description;
this.quantity = 0;
this.price = price;
}
String getDescription() {
return description;
}
int getQuantity() {
return quantity;
}
int getPrice() {
return price;
}
// Main program to instanciate and call StockItem object
public static void main(String[] args) {
System.out.println("Creating StockItem Object");
StockItem myItem = new StockItem("Baked Beans", 127);
System.out.println("Retrieving Item");
System.out.println("Item:" + myItem.getDescription());
System.out.println("Price:" + myItem.getPrice());
System.out.println("Quantity:" + myItem.getQuantity());
}
}

Thanks. This is as far as I have got - I haven't started on the methods yet; I didn't want to go any further when I couldn't even get the first bit right.

The tutor for this module hasn't taught online before so replies to you and stuff, which is great and completely different to my last two modules. The forum is pretty quiet and people seem to be really far ahead of the learning schedule, so if you're working on what you're meant to be, everyone else did it ages ago and has moved on. Bloody keeners ?

Thanks for this raspberryjam, I'll take a closer look and try and work out where I'm going wrong.

Feel free to email if you need any help, my H is happy to help.

?

Thanks. You may be hearing from me a lot over the coming months ?

No problem am going to edit my email address now though!

When you're writing the code to create he new object - do you have bakedbeans inside quotation marks to denote that it is your string, and not a reference to a variable?

i.e

StockItem myItem = new StockItem("baked beans", 21);

No, I didn't have. I do now, and it works. I love you! ?

Any time - my Java is a little rusty, but feel free to give me a shout if you need someone to cast an eye over code in future!

Thank you! ?

And thank you all kind Java hitchers and their husbands!