how to access the first element of an array in java code example

Example 1: get last element of array java

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