how to get the first element of arrayList code example

Example 1: java get last element of list

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

Example 2: find first element of list java

final Object firstElement = list.stream()
  .findFirst()
  .orElse(new Object()) //Give a default value if there are no elements
  
final Object firstElement = list.stream()
  .findFirst()
  .orElseThrow(() -> new Exception()) //Throw an exception if there are no elements