Calling method after Optional.filter() without passing in object

notAChance :

I can understand the below:

user
  .filter(u -> "Sam".equals(u.getName()))
  .ifPresent(this::doSomethingWithUser);

if user.getName is equal to "Sam" then pass user to local method doSomethingWithUser().

However, what if I simply wanted to call a local method, without passing user but keeping the check that user.getName is equal to "Sam"?

Does this use case make using Optional redundant?

drekbour :

Just ignore the mandatory function parameter. This means you cannot use shorthand :: syntax and goes like this:

user
  .filter(u -> "Sam".equals(u.getName()))
  .ifPresent(u -> doSomethingWithoutUser());

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