how to calculate length of list in java code example

Example 1: arraylist length java

aList.size()

Example 2: java list length

ArrayList<String> listOfBanks = new ArrayList<>(); 
int size = listOfBanks.size(); 
System.out.println("size of array list after creating: " + size);

Example 3: length of list in java

a.size() where a is list