java - 从多个不同类型的用户输入创建一个数组

Question

我如何将用户输入项目(名称、成本、优先级)中的 3 个项目放入一个对象项目中，并将该对象项目放入其他对象的数组中？

public class Main {

    public static void main(String[] args) {
       //here are my variables.  
       //I'm pretty sure a few of these should be defined 
       //  in their own item class. 
       int i=0;
       String name1;
       int priority1; 
       double cost1;

       //String[] shoppingList = new String[7];
       String[] item  = new String[7];

       // I am able to grab input from the user for all 3 elements of 
       //   an item object (name, cost, priority)
       // I am missing how to save these 3 elements into an item object 
       //  and create an array for each item object
       for (i=0; i<item.length;i++)  {

          //I want to capture name, priority, and cost of each item
          //  and add each item as an in
           Scanner keyboard = new Scanner(System.in);
           System.out.println("Enter item name " + i);
           String name = keyboard.next();

           Scanner keyboard2 = new Scanner(System.in);
           System.out.println("Enter the price of item " + i);
           double cost = keyboard2.nextDouble();

           Scanner keyboard3 = new Scanner(System.in);
           System.out.println("Enter Priority Number " + i);
           int priority = keyboard3.nextInt();

Answer 1

“我如何将用户输入项目(名称、成本、优先级)中的 3 个项目放入一个对象项目中”

如果我没理解错的话，解决办法是创建一个新类。调用它与你正在做的事情相关

class Data {
    String name;
    double cost;
    int priority;
    Data(String name, double cost, int priority) { //Set variables }
}

然后您可以使用您的相关信息创建一个新的“数据”类:

Data myObject = new Data("Input1", 37.50, 2);

例如，随机信息。您可以根据需要制作任意数量的这些独特对象，并根据您的需要将它们添加到数组或 ArrayList 中:

Data[] myArray = new Data[100];
//or
List<Data> myList = new ArrayList<Data>();