add at a position in arraylist code example

Example 1: java insert into arraylist

ArrayList<Integer> str=new ArrayList<Integer>();
str.add(0);
str.add(1);
 // Result = [0, 1]
    
str.add(1, 11);
 // Result = [0, 11, 1]

Example 2: java arraylist add to top

//create an ArrayList
  ArrayList<String> myList 
                = new ArrayList<String>();
        
//some items to ArrayList
myList.add("One");
myList.add("Two");
myList.add("Three");

/*
* To insert element at beginning of ArrayList
* use add method of ArrayList class with index 0
*/

myList.add(0, "Zero");