Apache Commons (Collections and some others) is a very old, basically legacy library, they are not nearly equivalent in terms of functionality so comparing them

Apache Commons (Collections and some others) is a very old, basically legacy library, they are not nearly equivalent in terms of functionality so comparing them makes no sense. Google Guava is a nice library but it doesn't have any alternatives that I know of so it can not be used as an example to support the above generalization (which would need many examples to hold any weight anyway). Angular vs React is a counterexample I can think of. Angular is shit.