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#1 ryan4509 ?
Reputation: 0
- Posts: 5
- Joined: 19-May 13
Posted Yesterday, 02:25 PM
This is my program I have for keeping track of an inventory. What I'm trying to figure out is how I can store all of the information about that item that the user enters into an array called game. I thought of somehow using a for loop for incrementing through each index in the array and saving the user input from that iteration into the first index, but I can't figure out how to get that to work or even if that would work. What I would like this program to be able to do is save all of the user input from the first time through the loop into the first spot in the array, then on the second iteration save all of that user input about the item into spot 2 in the array, and so on.I got my program to store input regarding a single item, I just want that input and all of the input from each iteration after that to be stored in a single array.
import java.util.Scanner; //Program uses utility Scanner public class InventoryProgram02{ public static void main(String args[]){ //Main method begins java application InventoryResources game = new InventoryResources(); //Creates new game object of class InventoryResources Scanner input = new Scanner(System.in); //Creates new Scanner to gather user input InventoryResources[] game = new InventoryResources[5] //Lines 18-24, variable declaration String cleanInputBuffer; double gameNumber; String gameName; double gameQuantity; double gamePrice; double valueOfInventory; boolean end = false; int count; //Start of while loop while (end == false){ System.out.print("\nEnter in the name of the video game, \n"); //Prompt System.out.print("or enter in stop, if you're finished: "); //Prompt game.setgameName(input.nextLine()); //Saves user input to variable gameName System.out.print("\n"); //Start of if else statement if (game.getgameName().toLowerCase().equals("stop")){ //If sentinal value has been entered, end = true; //while loop stops, and program ends System.out.print("Program Terminated."); //Output displayed upon program completion } else{ System.out.printf("Enter in the number of %s games in stock,\n", game.getgameName()); //Prompt System.out.print("positive numbers only: "); //Prompt game.setgameQuantity(input.nextDouble()); //Saves user input to gameQuantity variable System.out.print("\n"); // Outputs blank line System.out.printf("Enter in the price of each %s game,\n", game.getgameName()); //Prompt System.out.print("positive numbers only: $"); //Prompt game.setgamePrice(input.nextDouble()); //Saves user input to gamePrice variable System.out.print("\n"); //Outputs blank line System.out.printf("Enter in the item number associated with %s: ", game.getgameName()); //Prompt game.setgameNumber(input.nextDouble()); //Saves user input to gameNumber variable System.out.print("\n\n"); //Outputs 2 blank lines System.out.printf("The name of the video game in stock is %s.\n", game.getgameName()); //Outputs item name System.out.printf("\nThe item number associated with %s is %.2f\n", game.getgameName(), game.getgameNumber()); //Outputs item number System.out.printf("\nThe number of the %s games in stock is %.2f.\n", game.getgameName(), game.getgameQuantity()); //Outputs item quantity System.out.printf("\nThe price for each of the %s games is $%.2f.\n", game.getgameName(), game.getgamePrice()); //Outputs item price System.out.printf("\nThe total value of the %s stock is $%.2f.\n\n", game.getgameName(), game.getvalueOfInventory()); //Outputs value //of inventory cleanInputBuffer = input.nextLine(); //Cleans input buffer } } //End while loop } //End main method } //End InventoryProgram01 class
public class InventoryResources{ //lines 10-14, variables declaration public String itemName; public double itemNumber; public double itemQuantity; public double itemPrice; public double valueOfInventory; //Constructor with 6 arguments public InventoryResources(){ itemName = ""; itemNumber = 0; itemQuantity = 0; itemPrice = 0; valueOfInventory = 0; } public void setgameName(String gameName){ this.itemName = gameName; } public String getgameName(){ return itemName; } public void setgameQuantity(double gameQuantity){ this.itemQuantity = gameQuantity; } public double getgameQuantity(){ return itemQuantity; } public void setgameNumber(double gameNumber){ this.itemNumber = gameNumber; } public double getgameNumber(){ return itemNumber; } public void setgamePrice(double gamePrice){ this.itemPrice = gamePrice; } public double getgamePrice(){ return itemPrice; } public double getvalueOfInventory(){ return itemQuantity * itemPrice; } } //Ends InventoryResources class
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Replies To: I need help saving user input in a single array
#2 GregBrannon ?
Reputation: 1992
- Posts: 4,849
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Re: I need help saving user input in a single array
Posted Yesterday, 02:56 PM
If you're getting errors, you should post them, copied and pasted exactly as they appear to you. If you're not seeing errors, then you're not paying attention.There are two variables of different types in the same scope (local to method main()) with the same name, 'game'. That's not allowed. Delete one of them.
Is InventoryResources a class that will contain a game's details? If so, why not call it Game or VideoGame?
The user's input will be entered into an instance of InventoryResources (with a better name), that is collected in the array games:
InventoryResources[] games = new InventoryResources[5];
Then an instance has to be created and filled with the user's input:
games[0] = new InventoryResources();
// get the video game's name and add it to the games[0]
// instance
games[0].setGameName( videoGameName );
etc . . .
Hope that helps.
#3 pbl ?
Reputation: 8040
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Re: I need help saving user input in a single array
Posted Yesterday, 03:54 PM
That is an horror !!! Programming wiseThe main() method should have only 3 to 5 lines
the rest, in a OO approach (and Java is a OO language) should be within the class instance
#4 ryan4509 ?
Reputation: 0
- Posts: 5
- Joined: 19-May 13
Re: I need help saving user input in a single array
Posted Yesterday, 09:42 PM
So what I'm trying to do here is keep track of an inventory of games which are stored in an array called mygames. The user enters in data about the games, which should be getting stored in the mygames array. Then when the user enters in stop for the name of the game, the program prints off the contents of the array.The problem that I'm having here is that the information is not being stored in the mygames array, so when the program goes to output the contents of the array, it just prints off the data for the game from the most recent iteration of the loop. I'm not sure what I'm doing wrong, and why the information is not being stored in the mygames array.
My goal for the program is to have it continue looping through the for loop gathering user input and storing it in the mygames array, until the sentinel value ("stop") is entered. Then it should just print off all of the contents of the array that were entered up to that point.
I'm just starting off learning Java, so any help regarding this would be appreciated.
import java.util.Scanner; //Program uses utility Scanner public class InventoryProgram02{ public static void main(String args[]){ //Main method begins java application VideoGame game = new VideoGame(); Scanner input = new Scanner(System.in); //Creates new Scanner to gather user input VideoGame[] mygames = new VideoGame[10]; //Lines 18-24, variable declaration String cleanInputBuffer; double gameNumber; String gameName; double gameQuantity; double gamePrice; double valueOfInventory; boolean end = false; int count; for (count = 0; count <=10; count++){ VideoGame myGame = new VideoGame(); mygames[count] = myGame; System.out.print("\nEnter in the name of the video game,\n"); //Prompt System.out.print("or enter in stop if your finished: "); game.setgameName(input.nextLine()); //Saves user input to variable gameName System.out.print("\n"); if (game.getgameName().toLowerCase().equals("stop")){ //If sentinal value has been entered, end = true; //while loop stops, and program ends for (int a = 0; a <=count; a++){ System.out.println("Title of game: " + game.getgameName()); System.out.println("Total in stock: " + game.getgameQuantity()); System.out.println("Price for each: " + game.getgamePrice()); System.out.println("Item number: " + game.getgameNumber()); System.out.println("Value of stock: " + game.getvalueOfInventory()); System.out.print("\n"); }//ends inner for }//ends if else{ System.out.printf("Enter in the number of %s games in stock,\n", game.getgameName()); //Prompt System.out.print("positive numbers only: "); //Prompt game.setgameQuantity(input.nextDouble()); //Saves user input to gameQuantity variable System.out.print("\n"); // Outputs blank line System.out.printf("Enter in the price of each %s game,\n", game.getgameName()); //Prompt System.out.print("positive numbers only: $"); //Prompt game.setgamePrice(input.nextDouble()); //Saves user input to gamePrice variable System.out.print("\n"); //Outputs blank line System.out.printf("Enter in the item number associated with %s: ", game.getgameName()); //Prompt game.setgameNumber(input.nextDouble()); //Saves user input to gameNumber variable System.out.print("\n\n"); //Outputs 2 blank lines cleanInputBuffer = input.nextLine(); //Cleans input buffer }//ends else }//ends outer for } //End main }//End class
public class VideoGame{ //lines 10-14, variables declaration public String itemName; public double itemNumber; public double itemQuantity; public double itemPrice; public double valueOfInventory; //Constructor with 5 arguments public VideoGame(){ itemName = ""; itemNumber = 0; itemQuantity = 0; itemPrice = 0; valueOfInventory = 0; } public void setgameName(String gameName){ this.itemName = gameName; } public String getgameName(){ return itemName; } public void setgameQuantity(double gameQuantity){ this.itemQuantity = gameQuantity; } public double getgameQuantity(){ return itemQuantity; } public void setgameNumber(double gameNumber){ this.itemNumber = gameNumber; } public double getgameNumber(){ return itemNumber; } public void setgamePrice(double gamePrice){ this.itemPrice = gamePrice; } public double getgamePrice(){ return itemPrice; } public double getvalueOfInventory(){ return itemQuantity * itemPrice; } } //Ends VideoGame class
#5 macosxnerd101 ?
Reputation: 9056
- Posts: 33,609
- Joined: 27-December 08
Re: I need help saving user input in a single array
Posted Yesterday, 09:48 PM
Duplicate threads merged. Please avoid duplicate posting.
#6 ryan4509 ?
Reputation: 0
- Posts: 5
- Joined: 19-May 13
Re: I need help saving user input in a single array
Posted Yesterday, 10:13 PM
As you can see I've made some modifications to my program from my original post, but I still can't get the program to accomplish what I'm trying to accomplish with it. The information is still not being stored in the my games array.
macosxnerd101, on 29 May 2013 - 09:48 PM, said:
Duplicate threads merged. Please avoid duplicate posting.
Sorry about that, I couldn't figure out how to delete my original post, so that I could just have the one.
This post has been edited by macosxnerd101: Yesterday, 10:14 PM
Reason for edit:: Removed large quote. It is unnecessary.
#7 macosxnerd101 ?
Reputation: 9056
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- Joined: 27-December 08
Re: I need help saving user input in a single array
Posted Yesterday, 10:14 PM
You can't delete posts.
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