ArrayList input java

arraylist, input, java

Solution

The idea with using ArrayList is to avoid the deterministic iteration counts. Try something like this:

ArrayList<Integer> mylist = new ArrayList<Integer>();
while (sc.hasNextInt()) {
    int i = sc.nextInt();
    mylist.add(i);
}

Problem

I'm looking at the problem: Write a program which reads a sequence of integers and displays them in ascending order. I'm creating an `ArrayList` (which I am new to) and I want to populate with integers input from the command line. With an array I could use a `for` loop with: ``` for (int i =0; i < array.length; i++) { array[i] = scanner.nextInt(); ``` but with an `ArrayList` of unbounded size I'm not sure how to process the input. EDIT: ``` class SortNumbers { public static void main(String[] args) { List numbers = new ArrayList(); Scanner scanner = new Scanner(System.in); System.out.println("Enter some numbers."); while (scanner.hasNextInt()) { int i = scanner.nextInt(); numbers.add(i); } } } ```

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