// Product.java

public class Product {
	private int itemNum;		// Item Number
	private String itemName;	// Item Name
	private int units;			// Number of units
	private double price;		// Price per unit
	public static Product[] products;		// Use an array to store all products
	
	// Define getter and setters
	public void setItemNum(int itemNum) {
		this.itemNum = itemNum;
	}	
	public int getItemNum() {
		return itemNum;
	}
	public void setItemName(String itemName) {
		this.itemName = itemName;
	}	
	public String getItemName() {
		return itemName;
	}
	public void setUnits(int units) {
		this.units = units;
	}	
	public int getUnits() {
		return units;
	}
	public void setPrice(double price) {
		this.price = price;
	}	
	public double getPrice() {
		return price;
	}
	
	// Define Constructor
	public Product(int itemNum, String itemName, int units, double price) {
		this.itemNum = itemNum;
		this.itemName = itemName;
		this.units = units;
		this.price = price;
	}
	// Define the default constructor just in case
	public Product() {}
	
	// Calculate the inventory price
	public double getInventoryValue() {
		return price * units;
	}
	
	public static void sort() {	// Sort this array
		int n = products.length;
		// I use bubble sort
		for (int i=0; i<n; i++) {
			for (int j=i+1; j<n; j++) {
				if (products[i].getItemName().compareTo(products[j].getItemName()) >= 0) {
					Product temp = products[i];
					products[i] = products[j];
					products[j] = temp;
				}
			}
		}
	}
	
	public static double getTotalValue() {	// Get the total value
		double totalValue = 0;
		for (int i=0; i<products.length; i++) {
			totalValue += products[i].getInventoryValue();
		}
		return totalValue;
	}
}