java - Eclipse怎么统计程序运行了多久？

Question

想知道这个代码道理会运行多久，之前用过matlab它可以很方便的一键统计，Eclipse可以吗？还是只能getsystemtime自己处理了？

Answer 1

Use log, you can calculate the specific running time through log code, of course System.currentTimeMillis().

Answer 2

Shouldn’t counting code running time be done at the code level? I don’t know if Eclipse has this function, but I’ve never seen it.

Answer 3

用JUnit的测试用例啊，通过添加注解，可以测试程序的执行时间，非常方便的。