实际和格式参数列表的长度不同

Question

我正在尝试创建销售菜单，但我正在努力奋斗。所以这是我的产品类：

import java.text.*;

public class Product {
    private String name;
    private int stock;
    private double price;

    public Product(String name, int stock, double price) {
        String[] itemName = {"Whiteboard Marker, Whiteboard Eraser, Black Pen, Red Pen, Blue Pen"};
        double[] itemPrice = {1.50, 5.00, 1.50, 1.50, 1.50};
        int[] itemStock = {85, 45, 100, 100, 100};
    }

    public String getName() {
        return "";
    }

    public boolean isEmpty() {
        return false;
    }

    /**
     * Return true iff this product has at least n stock
     */
    public boolean has(int n) {
        return true;
    }

    /**
     * Sell n stock of this product (decrease stock by n)
     * and return the amount of money earned (price * n)
     */
    public double sell(int n) {
        return 0.0;
    }

    /**
     * Increase stock by n.
     */
    public void restock(int n) {
    }

    @Override
    public String toString() {
        return name + " - " + stock + " at $" + formatted(price); 
    }

    private String formatted(double money) {
        return new DecimalFormat("###,##0.00").format(money);
    }
}

然后我又开了一个班：

import java.util.*;

public class Store {
    private CashRegister cashRegister;
    private LinkedList<Product> products = new LinkedList<Product>();

    public Store() {
        products.add(new Product("Whiteboard Marker"));
        products.add(new Product("Whiteboard Eraser"));
        products.add(new Product("Black Pen"));
        products.add(new Product("Red Pen"));
        products.add(new Product("Blue Pen"));
    }

    private char readChoice() {
        return 'x';
    }

    private void sell() {
    }

    private void restock() {
    }

    private void viewStock() {
    }

    private void viewCash() {
    }

    private void pruneProducts() {
    }

    private String readName() {
        return "No Name";
    }

    private double readPrice() {
        return 0.0;
    }

    private int readNumber() {
        return 0;
    }

    private void help() {
        System.out.println("Menu options");
        System.out.println("s = sell");
        System.out.println("r = restock");
        System.out.println("v = view stock");
        System.out.println("c = view cash");
        System.out.println("p = prune products");
        System.out.println("x = exit");
    }
}

但是当我试图编译它时，＃34;构造函数Product in Class Product不能应用于给定的类型; required：java.lang.String，int，double;发现：java.lang.String;原因：实际和正式的参数列表长度不同。＆＃34; 如果您对此有任何疑问，请向我解释。非常感谢你！