import java.util.*;
import java.io.*;
 
public class Inventory
{
 
public static void main(String args[])//throws IOException
// don't throw an Exception here, the main method is
//the last place where it can be caught
 
{
 
String invArray[] = {"BDVD", "HDVD", "Music", "1220", "1367", "2903", "15", "25", "18", "19.95", "15.79", "13.99"};
 
// assign the value here, it makes it easier to read
double totInventory1 = 0;
double totInventory2 = 0;
double totInventory3 = 0;
double totalInventory = 0;
 
String productName1 = invArray[0];
 
int productNumber1 = Integer.parseInt(invArray[3]);
 
int inStock1 = Integer.parseInt(invArray[6]);
 
double unitPrice1 = Double.valueOf(invArray[9].trim()).doubleValue();
 
String productName2 = invArray[1];
 
int productNumber2 = Integer.parseInt(invArray[4]);
 
int inStock2 = Integer.parseInt(invArray[7]);
 
double unitPrice2 = Double.valueOf(invArray[10].trim()).doubleValue();
 
String productName3 = invArray[2];
 
int productNumber3 = Integer.parseInt(invArray[5]);
 
int inStock3 = Integer.parseInt(invArray[8]);
 
double unitPrice3 = Double.valueOf(invArray[11].trim()).doubleValue();
 
totInventory1 = (inStock1 * unitPrice1);
totInventory2 = (inStock2 * unitPrice2);
totInventory3 = (inStock3 * unitPrice3);
 
Product prod = new Product(totInventory1, totInventory2, totInventory3);
totalInventory = prod.gettInventory();
 
//Method Sort Array
modifyArray(invArray);
// {
// I have no idea what that is supposed to do here
System.out.printf( "%2s%s%13s%16s%12s%12s%16s\n", " ", "Item Name",
"Item Number", "Items on Hand", "Item Price", "Item Value", "Total Value");
 
int counter =0;
 
System.out.printf( "%d%8s%10d%16d%16.2f%12.2f\n", (counter +1), productName1,
productNumber1, inStock1, unitPrice1, totInventory1);
 
System.out.printf( "%d%8s%10d%16d%16.2f%12.2f\n", (counter +2), productName2,
productNumber2, inStock2, unitPrice2, totInventory2);
 
System.out.printf( "%d%8s%10d%16d%16.2f%12.2f\n", (counter +3), productName3,
productNumber3, inStock3, unitPrice3, totInventory3);
 
System.out.println();
 
System.out.printf("%70s$%.2f\n", "Value of total inventory: ", totalInventory);
}
// most important: close your main method
public static void modifyArray( String invArray2 [] )
//void modifyArray( String b [] )
{
Arrays.sort(invArray2);
}
}

public class Inventory2 {
 
    static class Group {
 
        private int currentIndex = 0;
        private Element[] elements;
 
        Group(int itemsTotal) {
            elements = new Element[itemsTotal];
        }
 
        void add(Element el) {
            elements[currentIndex] = el;
            currentIndex++;
        }
 
        double getValueOfTotalInventory() {
            double sum = 0;
            for (int i = 0; i < currentIndex; i++) {
                sum += elements[i].getItemValue();
            }
            return sum;
        }
 
        void printHeader() {
            System.out.println(Element.getHeader());
        }
 
        void printRecords() {
            for (int i = 0; i < currentIndex; i++) {
                System.out.println(elements[i].getData());
            }
        }
 
        void printSum() {
            System.out.println("Value of total inventory: $" + getValueOfTotalInventory());
        }
 
        void printAll() {
            printHeader();
            printRecords();
            printSum();
        }
    }
 
    static class Element {
 
        private String productNumber;
        private int inStock;
        private int items;
        private double unitPrice;
 
        Element(String[] el) {
            productNumber = el[0];
            inStock = Integer.parseInt(el[1]);
            items = Integer.parseInt(el[2]);
            unitPrice = Double.parseDouble(el[3]);
        }
 
        double getItemValue() {
            return items * unitPrice;
        }
 
        public static String getHeader() {
            StringBuilder sb = new StringBuilder();
            sb.append("productNumber");
            sb.append("\t");
            sb.append("inStock");
            sb.append("\t");
            sb.append("items");
            sb.append("\t");
            sb.append("unitPrice");
            sb.append("\t");
            sb.append("itemValue");
            return sb.toString();
        }
 
        public String getData() {
            StringBuilder sb = new StringBuilder();
            sb.append(productNumber);
            sb.append("\t");
            sb.append(inStock);
            sb.append("\t");
            sb.append(items);
            sb.append("\t");
            sb.append(unitPrice);
            sb.append("\t");
            sb.append(getItemValue());
            return sb.toString();
        }
    }
 
    public static void main(String args[]) {
        //changed form of record
        String invArray[][] = {{"BDVD", "1220", "15", "19.95"},
            {"HDVD", "1367", "25", "15.79"},
            {"Music", "2903", "18", "13.99"}};
        int invArrayLength = invArray.length;
        Group group = new Group(invArray.length);
        //adding records
        for (int i = 0; i < invArrayLength; i++) {
            group.add(new Element(invArray[i]));
        }
        //report
        group.printAll();
    }
}