[True|False|FileNotFound] ;-) For what it's worth, Java's also got this class: https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html https://do

[True|False|FileNotFound] ;-) For what it's worth, Java's also got this class: https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html https://docs.oracle.com/javase/8/docs/api/java/util/Optional... Although in practice there isn't much performance difference in my experience.