如何让扫描器理解我写的量？

Question

这只是一些作业，但我无法找到一种方法来实现它。请看看我的代码。输入数字后，我只想玩弄它们。public static void main(String[] args) {    Scanner sc = new Scanner(System.in);    //user says if he'd like to use 3 numbers for instance (2,4,5)    System.out.println("How many numbers would you like to use? : ");    int amountOfNumbers = sc.nextInt();    System.out.println("Great! Please type in your numbers: ");    int numbers =sc.nextInt(amountOfNumbers);    // should let him write the amount of numbers he entered    }一旦他输入了他想要使用的数字数量，我希望扫描仪能够让他输入所有这些数字。假设他想使用的号码数量是三个。我希望他能够像这样在控制台中输入：第一个数字 + 回车键第二个数字 + 输入键第三个数字+回车键写不下去了这就是我在这里通过在扫描仪本身中添加“amountOfNumbers”的意思......（这是行不通的）int numbers =sc.nextInt(amountOfNumbers);BR

Answer 1

考虑一个for循环：

for(int i = 0; i < amountofNumbers; i++){
    // add to a collection / array / list
    }

然后从那里访问您需要的内容。

Answer 2

import java.util.*; 

class EnterNumber{

    public void enter_list_function(){

        Scanner sc = new Scanner(System.in);

        System.out.println("How many numbers would you like to use?"); 

        //Enter the Numbers of amount

        int input = sc.nextInt();

        ArrayList<Integer> list = new ArrayList<Integer>();

        System.out.println("Great! Please type in your numbers: "); 

        //Input - Numbers of amount

        for(int j =1; j<=input; j++ ){

            int addval = sc.nextInt();

            //Add the enter amount in array

            list.add(addval);

        }

        Iterator itr=list.iterator();  

        while(itr.hasNext()){  

           //get the enter amount from list

           System.out.println(itr.next());  

        }  

    }

    public static void main(String[] args){

        EnterNumber EnterNumber = new EnterNumber();

        EnterNumber.enter_list_function();

    }

}