Expense.java

public class Expense {
    String description;
    double amount;
    String category;

    public Expense(String description, double amount, String category) {
        this.description = description;
        this.amount = amount;
        this.category = category;
    }

    // 1. Converts this object into a String for the file
    // Example: "Coffee,5.0,Food"
    public String toFileString() {
        return description + "," + amount + "," + category;
    }

    // 2. Creates an Expense object FROM a file string
    public static Expense fromFileString(String fileLine) {
        String[] parts = fileLine.split(","); // Splits by comma
        // parts[0] is description, parts[1] is amount, parts[2] is category
        return new Expense(parts[0], Double.parseDouble(parts[1]), parts[2]);
    }

    @Override
    public String toString() {
        return description + " | $" + amount + " | (" + category + ")";
    }

    // --- NEW: Getters for the Table ---
    public String getDescription() { return description; }
    public double getAmount() { return amount; }
    public String getCategory() { return category; }

}