how to get the first element of a list in java code example

Example 1: 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

Example 2: java list get first element

!list_or_set.isEmpty()

Example 3: how to find first value of an list

// Python
list = [1,2,3]
firstdigit = list[0] // 1 

list = ['Hello', 'bye', 'Adios']
firstvalue = list[0] // 'Hello'