Java list get first element

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

Java list get first element

set.iterator().next();

Source: stackoverflow.com

Java list get first element

!list_or_set.isEmpty()

Source: stackoverflow.com

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