BudgetTracker.java

import java.util.Scanner;

public class BudgetTracker {
    public static void main(String[] args) {
        final int MAX_ENTRIES = 15;
        Scanner scanner = new Scanner(System.in);

        // Declare and allocate arrays for item names and monetary values
        String[] itemNames = new String[MAX_ENTRIES];
        float[] itemValues = new float[MAX_ENTRIES];

        // Initialize entry count
        int entryCount = 0;

        // Loop to get user input for budget items
        do {
            System.out.print("Enter a negative or positive value for a budget item. Enter 0 to stop: ");
            float value = scanner.nextFloat();
            scanner.nextLine(); // Consume newline character
            if (value != 0 && entryCount < MAX_ENTRIES) {
                System.out.print("Enter the name of the budget item: ");
                String itemName = scanner.nextLine();

                // Save values in arrays
                itemValues[entryCount] = value;
                itemNames[entryCount] = itemName;

                entryCount++;
            } else {
                break;
            }
        } while (entryCount < MAX_ENTRIES);

        // Calculate the maximum number of digits for dollars and cents
        int maxDollars = 0;
        int maxCents = 0;
        for (int i = 0; i < entryCount; i++) {
            String[] parts = String.format("%.2f", Math.abs(itemValues[i])).split("\\.");
            maxDollars = Math.max(maxDollars, parts[0].length());
            maxCents = Math.max(maxCents, parts[1].length());
        }

        // Print budget items and values
        System.out.println("\nBudget Items:");
        for (int i = 0; i < entryCount; i++) {
            printBudgetItem(itemNames[i], itemValues[i], maxDollars, maxCents);
        }

        // Print total
        float total = calculateTotal(itemValues, entryCount);
        System.out.printf("\nTotal Budget: $%0" + (maxDollars + maxCents + 3) + ".2f\n", total);

        scanner.close();
    }

    // Method to format and print each budget item
    private static void printBudgetItem(String itemName, float value, int maxDollars, int maxCents) {
        if (value < 0) {
            System.out.printf("%-20s:($%0" + (maxDollars + maxCents + 3) + ".2f)\n", itemName, Math.abs(value));
        } else {
            System.out.printf("%-20s: $%0" + (maxDollars + maxCents + 3) + ".2f\n", itemName, value);
        }
    }

    // Method to calculate the total of budget item values
    private static float calculateTotal(float[] values, int count) {
        float total = 0;
        for (int i = 0; i < count; i++) {
            total += values[i];
        }
        return total;
    }
}