Why is list.size()>0 slower than list.isEmpty() in Java?

Question

Why is list.size()>0 slower than list.isEmpty() in Java? On other words why isEmpty() is preferable over size()>0?<

Answer 1

I'm sorry, but your benchmark is flawed. Take a look at Java theory and practice: Anatomy of a flawed microbenchmark for a general description on how to approach benchmarks.

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Update: for a proper benchmark you should look into Japex.