农产品信息管理代码java代码

以下是一个简单的农产品信息管理系统的Java代码示例：

import java.util.Scanner;

class Product {
    private String name;
    private String type;
    private double price;

    public Product(String name, String type, double price) {
        this.name = name;
        this.type = type;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public String getType() {
        return type;
    }

    public double getPrice() {
        return price;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setType(String type) {
        this.type = type;
    }

    public void setPrice(double price) {
        this.price = price;
    }
}

class ProductManager {
    private Product[] products;
    private int numProducts;

    public ProductManager(int numProducts) {
        products = new Product[numProducts];
        this.numProducts = 0;
    }

    public void addProduct(Product product) {
        if (numProducts < products.length) {
            products[numProducts] = product;
            numProducts++;
        } else {
            System.out.println("Product list is full.");
        }
    }

    public void removeProduct(int index) {
        if (index >= 0 && index < numProducts) {
            for (int i = index; i < numProducts - 1; i++) {
                products[i] = products[i + 1];
            }
            numProducts--;
        } else {
            System.out.println("Invalid index.");
        }
    }

    public void displayProducts() {
        System.out.println("Product List:");
        for (int i = 0; i < numProducts; i++) {
            System.out.println(i + ". " + products[i].getName() + " (" + products[i].getType() + ") - $" + products[i].getPrice());
        }
    }
}

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        ProductManager productManager = new ProductManager(10);

        while (true) {
            System.out.println("Select an option:");
            System.out.println("1. Add product");
            System.out.println("2. Remove product");
            System.out.println("3. Display products");
            System.out.println("4. Exit");
            int option = scanner.nextInt();

            if (option == 1) {
                System.out.println("Enter product name:");
                String name = scanner.next();
                System.out.println("Enter product type:");
                String type = scanner.next();
                System.out.println("Enter product price:");
                double price = scanner.nextDouble();
                Product product = new Product(name, type, price);
                productManager.addProduct(product);
            } else if (option == 2) {
                System.out.println("Enter index of product to remove:");
                int index = scanner.nextInt();
                productManager.removeProduct(index);
            } else if (option == 3) {
                productManager.displayProducts();
            } else if (option == 4) {
                break;
            } else {
                System.out.println("Invalid option.");
            }
        }
    }
}

这个示例程序使用了一个Product类来表示一个农产品，以及一个ProductManager类来管理所有产品。用户可以选择添加、删除或显示产品，直到选择退出。