I am trying to construct a class SportsItem and then create a class
Supplier, in order to instruct the SportsItem class to reduce the
quantity of stock when an item is sold.
In my SportsItem class I have (description, price, quantity in stock,
reorder quantity and supplier). In the Supplier class i have variables
( name, phoneNumber and e-mail address).
I am trying to set it up so when i go to inspect the SportsItem i can
call the Supplier of that item and relevant details.

i know this sounds so basic, but im a beginner and would appreciate an
advice.

Dank u , ich bin.
Will take your advice
iyara

I'm also stuck on how to relate the Supplier classpublic class supplier
{
    // the suppliers full name
    private String name;
    // the suppliers phone number
    private string phoneNumber;
    // the suppliers email address
    private string emailAddress;
    private string sportsItem;

    /**
     * Create a new supplier with a given name, phone number and
e-mail address.
     */
    {

    Public supplier (String fullName, String phoneNumber, String
emailAddress)
    {
        name = fullName;
        phonenumber = phoneNumber;
        emailaddress = emailAddress;
        Item = 0;
        this.supplier = supplier;
    }

    /**
     * Return the full name of this supplier.
     */
    public String getName()
    {
        return name;
    }

    /**
     * Set a new name for this supplier.
     */
    public void changeName(String replacementName)
    {
        name = replacementName;
    }

    /**
     * Return the phoneNumber of this supplier.
     */
    public String getphoneNumber;
    {
        return phoneNumber;
    }

    /**
     * Substract items from StockQuantity
     */
    public void reduceStock(int )
    {
        stock += ;
    }

    /**
     * Return the number of items in stock.
     */
    public int getStockQuantity()
    {
        return stockQuantity;
    }

    /**
     * Return the login name of this student. The login name is a
combination
     * of the first four characters of the student's name and the
first three
     * characters of the student's ID number.
     */
    public String getquantityReorder()
    {
        return name.substring(0,4) + id.substring(0,3);
    }

    /**
     * Print the suppliers phone number and email address.
     */
    public void print()
    {
        System.out.println(name + " (" + phoneNumber + ")");
        System.out.println("Suppliers name is:  " +
SportsItem.getName());
        System.out.println("Suppliers emailAddress is:  " +
SportsItem.getemailAddress());
    }
}

to the sportsItem class. this so far