java中的Stack还推不推荐用？

Question

好像之前在 thinking in java中看到过说Stack类继承于Vector，而这两个类都不推荐使用了，但是在做一到OJ题时，我用LinkedList来模拟栈和直接用Stack，发现在进行入栈出栈操作时Stack的速度竟然还快一点，有点疑惑了..

Answer 1

Use the appropriate data structure for the appropriate scenario.
I have only used Stack when doing formula calculations, but I rarely use it at other times and it has no impact. So it still depends on your business scenario, and you should use it.

Answer 2

Not recommended
The advantage is thread safety, so single-threaded ArrayList and the like are better.
However, when multi-threading is needed, there are Collections.synchronizedList and the java.util.concurrent package. So forget about this thing.

Answer 3

When the sample size of computationally intensive code is small, the accidental error of performance testing is relatively large