class array{ public static void main(String[] args){ int arr[] = {1,2,3,4}; System.out.println("Before update" + arr[2]); arr[2] = 9;//updating the value System.out.println("After update" + arr[2]); } } /*output:- Before update3 After update9*/
list.set(1,"new value"); //example .. List<String> list = new ArrayList<>(); list.add("one"); list.add("two"); list.add("three"); System.out.println(list); // [one,two,three] list.set(1,"new"); System.out.println(list); //[one,new,three]