Java Array List

Java ArrayList Related

// import dependence package
import java.util.ArrayList; 

// create a new arraylist
ArrayList list = new ArrayList();

list.add(x) //add variable x to the list
list.get(idx) //return the idx position of the list
list.set(idx, new-element-value)//replace the element in place of idx with new-element-value
list.remove(y) // remove the element of y

list.toArray().length // get the current length of the list
list.toArray()[idx] // get the element at the idx position