I've wanted to play around with JMH, the Java Microbenchmark Harness, for a while. I recently came across an ArrayList used to express the semantics of set containment, wondered if that could ever be ...

1️⃣ Why Use ArrayList Instead of an Array? Dynamic Sizing – Unlike arrays, ArrayList can grow and shrink automatically. Built-in Methods – Provides useful methods like add(), remove(), contains(), etc ...

It's not terribly clean, but you could use indexOf() and check if it returns -1. Better than breaking out a loop.