尝试使用数组来存储用户输入的产品详细信息。 [英] Trying to do an array to store product details entered by user.

问题描述

您好，



我是Java新手....我正在尝试用户输入产品详细信息然后将其存储在一个数组，以便在用户需要时，他可以看到列出的产品。但是，我发现很难看到如何做阵列。有人可以看看代码并解释我做错了吗？





提前谢谢



我尝试过：

Hello,

Im a new to Java.... I am trying to do a program where user enters details of a product and then I store them in an array so that when the user wants, he can see the products listed. However, I am finding it hard to see how to do the array. Can someone please take a look at the code and explain what I did wrong?


Thank you in advance

What I have tried:

import java.util.Scanner;

public class pr {

public static void main (String[] args){
    

      Scanner in = new Scanner (System.in);
      
       int cost, sell, stock, vat;
       String description, id;
      
      String [] productDetails = "not";
      
      System.out.println("___________________");
      
      System.out.print("Enter product's unique identification number: ");
      productDetails[0] = in.next();
      System.out.print("Enter product's description: ");
      productDetails[1] = in.next();
      System.out.print("Enter product's costing price: ");
      productDetails[2] = in.toString();
      System.out.print("Enter product's selling price: ");
      productDetails[3] = in.toString();
      System.out.print("Enter quantity of the product: ");
      productDetails[4] = in.toString();
      System.out.print("Enter VAT cost of product: ");
      productDetails[5] = in.toString();
      
     
     
      System.out.print(productDetails);
     
     }
 }

推荐答案

你应该创建一个这样的类

这个类将描述每个产品属性的详细信息

You should create a class like this
This class will describe the details of the property of each product

class ProductDetails {
  public String idNo;
  public String description;
  public double cost;
  public double price;
  public int Quantity;
  
}

声明一个 ProductDetails 的数组

Declare an array of ProductDetails

ProductDetails[] pdr = new ProductDetails[n];

在此运行for循环

Run the for loop on this

for(int i=0;i<n;i++) {
  pdr[i]=readEachProductDetails(); 
}

您还需要定义

You also need to define

read_each_product_details

ProductDetails readEachProductDetails () {
 ProductDetails productDetails = new ProductDetails();
  // TODO your code to read the product details
 return productDetails;
}

并将所有这些组合在一起

And assemble all this together

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