IndexOutOfBoundsException when adding to ArrayList at index

Question

I get exception Exception in thread \"main\" java.lang.IndexOutOfBoundsException: Index: 1, Size: 0 for the below code. But couldn\'t understand why.

Answer 1

You must add elements to ArrayList serially, starting from 0, 1 and so on.

If you need to add elements to specific position you can do the following -

String[] strings = new String[5];
strings[1] = "Elephant";

List s = Arrays.asList(strings);
System.out.println(s); 

This will produce the sollowing output

[null, Elephant, null, null, null]