Java: Add elements to arraylist with FOR loop where element name has increasing number

You can't do it the way you're trying to... can you perhaps do something like this:

List<Answer> answers = new ArrayList<Answer>();
for(int i=0; i < 4; i++){
  Answer temp = new Answer();
  //do whatever initialization you need here
  answers.add(temp);
}

That can't be done with a for-loop, unless you use the Reflection API. However, you can use Arrays.asList instead to accomplish the same:

List<Answer> answers = Arrays.asList(answer1, answer2, answer3);

I assume Answer as an Integer data type so in this case, you can easily use Scanner class for adding the multiple elements(say 50).

private static final Scanner obj = new Scanner(System.in);
private static ArrayList<Integer> arrayList = new ArrayList<Integer>(50);
public static void main(String...S){
for (int i=0;i<50;i++) {
  /*Using Scanner class object to take input.*/
  arrayList.add(obj.nextInt());
}
 /*You can also check the elements of your ArrayList.*/
for (int i=0;i<50;i++) {
 /*Using get function for fetching the value present at index 'i'.*/
 System.out.print(arrayList.get(i)+" ");
}}

This is a simple and easy method for adding multiple values in an ArrayList using for loop. As in the above code, I presume the Answer as Integer it could be String, Double, Long et Cetra. So, in that case, you can use next(), nextDouble(), and nextLong() respectively.