9
Okay this is what i'm attempting to do.
I have to modify this program that i wrote so that it allows the user to list items by alpha as an option on the main menu. Here is my problem. If i sort the array of names by value into alpha, the prices, quantities, ect won't correlate anymore, because the names will have switched positions within the name array. However, the prices in the price array and quantities in the quantity array will not move, and will be mismatched. My teacher has been no help, and i don't have fellow students to work with. Is there any suggestions anyone can make?
I was considering using a bubble sort, which i can figure out okay, but how do i keep from having my arrays not matching up?!?! By the time this is answered it's going to be too late for me to get any credit on the assignment... I also have to somehow SUBCLASS each of those items. Basically i've come to the conclusion i have to encase each item in an object, but i can't seem to get that to cooperate if they are in the same java file, and i can't figure out how to create an array and fill it with these objects. The teacher said it was the same syntax, but what do i put BEFORE the name of the array? (since it's objects, not integers).
Simply put i need a lot of help, because i have a teacher who's been little if any help, takes forever to respond, and i have no classmates to work with.
import java.util.Scanner;
public class Inventory
{
public static void main ( String args[]) //primary user interface
{
Scanner input = new Scanner( System.in ); // allow user input
//declare arrays and variables
int itemchosen; //item who's information you wish to view
int choice; //declare variable choice
String itemname[] = {"Weak Heal Potion", "Regular Heal Potion", "Fire Gem", "Ice Gem", "Thunder Gem", "Water Gem", "Earth Gem", "Roc Feather", "Shield Scroll", "Haste Powder"}; //10 different items
int itemnumber[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; //item's number
double price[] = {10.20, 20.40, 50.00, 50.00, 50.00, 50.00, 50.00, 20.70, 30.00, 99.99}; //unit price
int quantity[] = {5, 4, 3, 7, 8, 9, 10, 3, 44, 5}; //unit quantity
double stockvalue;//value of quantity of those items
double inventoryvalue; // overall inventory value
inventoryvalue = 0; //initialize variable
do
{
System.out.println( "Please select an option and press enter:\n [1] View item information\n [2] View overall stock value\n [3] Full overview of items\n [4] Exit program" ); //main menu
choice = input.nextInt(); //input choice
switch (choice) // check user input to open correct menu
{
case 1: // user chooses option 1 to view an item
System.out.println( "Please input the item who's information you wish to view:");
itemchosen = input.nextInt();
stockvalue = quantity[itemchosen]*price[itemchosen];
System.out.printf( " Item Number: %d\n Item Name: %s\n Quantity: %d\n Cost:$%.2f\n Value of all in stock: $%.2f\n", itemnumber[itemchosen], itemname[itemchosen], quantity[itemchosen], price[itemchosen], stockvalue);
choice = 0; // causes loop to repeat
break;
case 2: // user chooses option 2 to find out total value of inventory
for (int counter = 0; counter < itemnumber.length; counter++ )
inventoryvalue += (price[counter]*quantity[counter]);
System.out.printf( " The total value of your inventory is %.2f\n", inventoryvalue);
choice = 0; //causes loop to repeat
break;
case 3: //user wants to view a complete store list
for (int counter = 0; counter < itemnumber.length; counter++ )
System.out.printf( " Item Number: %d\n Item Name: %s\n Quantity: %d\n Cost:$%.2f\n\n ", itemnumber[counter], itemname[counter], quantity[counter], price[counter]);
choice = 0; //causes loop to repeat
case 4: //user chooses to exit program
break; //allows program to exit
default: // user enters anything not accepted
System.out.printf( "That is not a valid option. Please re-enter.");
choice = 0; // causes loop to repeat
break;
} // end switch
} while (choice == 0);
} // end main
} //end file
