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Thread: Noobie issues?

  1. #1
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    Default Noobie issues?

    I'm having a few issues with my program. First off, for some reason when I do setBasePrice, it doesn't return as a -1 nor 1, depending on what I do. As well, for calculateTotalPrice, it doesn't return as -1 when under 0 and over 1 and my program overall gives the wrong value (for instance for a Refrigerated item with the price of $5.60 and taxRate of .06, it's supposed to be $7.562 and it's not), but I think if I figure out the return issue, it will help with that problem.

    Could someone please help me figure out my errors?

    Thank you.

    public class GroceryItem {
     
          private String groceryName, groceryCategory;
          public final double minPrice = 0, maxPrice = 500, taxHigh = 1;
          private static final String GENERAL = "General", PRODUCE = "Produce",
          REFRIGERATED = "Refrigerated", FROZEN = "Frozen";
          private double basePrice = 0, localRate = 0, totalPrice = 0;
     
     
          public GroceryItem(String name, String category) {
             groceryName = name;
             groceryCategory = category;
             category = GENERAL;
             basePrice = 0;
          }
     
     
          public String setName(String itemName) {
             if (itemName == null || itemName.trim().equals("")) {
                itemName = "No Name";
                groceryName = itemName;
                return itemName;
             }
             else {
                groceryName = itemName;
                return itemName;
             }
          }
     
          public String getName() {
             return groceryName;
          }
     
     
          public int setBasePrice(double base) {
             basePrice = base;
             if (basePrice > minPrice || base <= maxPrice) {
                return 1;
             }
             else if (basePrice > maxPrice) {
                return 0;
             }
             else {
                return -1;
             }
          }
     
     
          public double getBasePrice() {
             return basePrice;
          }
     
     
          public double calculateTotalPrice(double taxRate) {
             localRate = taxRate;
             if (taxRate < minPrice || taxRate > taxHigh) {
                return -1;
             }
             else if (groceryCategory == GENERAL) {
                totalPrice = (basePrice + taxRate);
             }
             else if (groceryCategory == PRODUCE) {
                totalPrice = (basePrice + (basePrice * 0.05));
             }
             else if (groceryCategory == REFRIGERATED) {
                totalPrice = ((basePrice + 1.50) + taxRate);
             }
             else if (groceryCategory == FROZEN) {
                totalPrice = ((basePrice + 3.00) + taxRate);
             }
     
             return totalPrice;
          }
     
          public boolean setCategory(String cat) {
             groceryCategory = cat;
             if (cat == GENERAL) {
                return true;
             }
             else if (cat == PRODUCE) {
                return true;
             }
             else if (cat == REFRIGERATED) {
                return true;
             }
             else if (cat == FROZEN) {
                return true;
             }
             else {
                return false;
             }
          }
     
          public String getCategory() {
             return groceryCategory;
          }
     
          public String toString() {
             String output = "Grocery Item: " 
                + groceryName + "\n"
                + "Category: " 
                + groceryCategory + "\n"
                + "Base Price of Grocery Item: "
                + basePrice + "\n";
     
             return output;
          }
       }


  2. #2
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    Default Re: Noobie issues?

    Hello,
    Is you main method in a different class? Also you have parameters for your methods that are not declared or initialized. Again, that may be because its in a different class.You should include that code also.

  3. #3
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    Default Re: Noobie issues?

    Oh, yes! I'm sorry, here's the main method, but I am also having issues with that, but I am trying to figure them out before throwing in the towel.
       import java.util.Scanner;
       import java.util.ArrayList;
       import java.io.IOException;
       import java.io.File;
     
       public class GroceryList {
     
          public static void main(String[] args) throws IOException
     
     
          {
     
             String file = "", line = "", grocery = "", category = "";
             double tax;
             ArrayList<GroceryItem> groceries = new ArrayList<GroceryItem>();
             Scanner fileScan = new Scanner(new File(groceries.txt));
     
             GroceryItem groceryInfo = new GroceryItem(grocery, category);
     
             System.out.println("Insert file name: ");
             file = fileScan.nextLine();
     
             while(fileScan.hasNext())
     
     
             {
                grocery = fileScan.nextLine();
     
                Scanner lineScan = new Scanner(line);
                while (lineScan.hasNext()) {
                   groceries.add(new GroceryItem(grocery, category));
                }
             }
             fileScan.close();
     
             System.out.println("\n\nGrocery List");
             System.out.println("------------");
     
             if (category == "General") {
                System.out.println("General:\n"
                   + groceries);
             }
             else if (category == "Produce") {
                System.out.println("Produce: \n"
                   + groceries);
             }
             else if (category == "Refrigerated") {
                System.out.println("Refrigerated:\n"
                   + groceries);
             }
             else if (category == "Frozen") {
                System.out.println("Frozen:\n"
                   + groceries);
             }
     
             int index = 0;
             while (index < groceries.size()) {
                System.out.print(groceries.get(index) + " ");
                index++;
     
             }
          }
     
       }

  4. #4
    Think of me.... Mr.777's Avatar
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    Default Re: Noobie issues?

    Do you think, your existing code is working fine without errors?
    First, remove all the syntax errors from your code.
    Later, tell us, where exactly the problem, you want to discuss.
    Sorry to say but no one will even try to read the whole code and try to understand what you want to do.
    State your problem clearly so that we could help you.
    Thanks

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