Posted 10-24-2019 Declan LearnData StructureArrayList 123456789101112131415// the data type must be a type of classArrayList<String> a = new ArrayList<String>();ArrayList<Integer> b = new ArrayList<Integer>();// the size of the ArrayListarrayList.size();// add data to the ArrayListarrayList.add("DATA");// replace data by returning the value of the replaced dataarrayList.set();// remove data by returning the value of the removed dataarratList.remove(); How to traverse the ArrayListRead more