java - 短项目 : Electronics Inventory

Question

我正在做一个简短的项目，作为一种电子商店库存。以下是文本文件中的商品编号、描述、数量和价格列表:

65321,Tablet,54,150.00
91524,Monitors,24,125.50
25013,Printers,30,65.75
32841,Router,67,90.15
53214,Modem,50,50.50
26442,Hard Drive,14,40.89
30224,Power Supplies,44,125.44
41557,CPU,39,149.54
71561,Headphones,40,75.24

这是我到目前为止所做的:

库存计算.java

ArrayList<BookItem> inventory = new ArrayList<>();
        BufferedReader inFile = new BufferedReader(new FileReader("C:\\Users\\Documents\\Data\\stock.txt"));
        String line;
        line = input.nextLine();
        String[] tokens = line.split(",");
        int itemNumber = Integer.parseInt(tokens[0]);
        String description = tokens[1];
        int quantity = Integer.parseInt(tokens[2]);
        double unitCost = Double.parseDouble(tokens[3]);

        System.out.println("Inventory Item");
        System.out.println("Number  Description           Quantity  Unit Price          Value");

库存库存.java

public class InventoryItem {

private int itemNumber;
private String description;
private int quantity;
private double unitCost;

public InventoryItem(int itemNumber, String description, int quantity, double unitCost) {
    this.itemNumber = itemNumber;
    this.description = description;
    this.quantity = quantity;
    this.unitCost = unitCost;
}

public int getItemNumber() {
    return itemNumber;
}

public void setItemNumber(int itemNumber) {
    this.itemNumber = itemNumber;
}

public String getDescription() {
    return description;
}

public void setDescription(String description) {
    this.description = description;
}

public int getQuantity() {
    return quantity;
}

public void setQuantity(int quantity) {
    this.quantity = quantity;
}

public double getUnitCost() {
    return unitCost;
}

public void setUnitCost(double unitCost) {
    this.unitCost = unitCost;
} }

我无法弄清楚如何获得每件元素的总值(value)。我需要看到的结果如下

预期输出:

Number  Description           Quantity  Unit Price         Value
 65321  Tablets                     54      150.00      8,100.00
 91524  Monitors                    24      125.50      3,012.00
 25013  Printers                    30       65.75      1,972.50
 32841  Routers                     67       90.15      6,040.05
 53214  Modems                      50       50.50      2,525.00
 26442  Hard Drives                 14       40.89        572.46
 30224  Power Supplies              44      125.44      5,519.36
 41557  CPU                         39      149.54      5,832.06
 71561  Headphones                  40       75.24      3,009.60

Answer 1

创建一个方法，将商品的总数量乘以单位成本，然后返回结果。将以下代码添加到您的 InventoryItem 类中。

 public double getTotalValueOfItem()
 {
      return unitCost * quantity;
 }