how to get the last part of an arraylist code example

Example 1: get last element of array java

firstNum = numbers[0];
lastNum = numbers[numbers.length-1];

Example 2: java last element in array

arrayName[arrayName.length() - 1];

Example 3: java get last element of list

ArrayList<Integer> list = new ArrayList<Integer>(5); 
int last = list.get(list.size() - 1);