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