VisualVM is a handy tool just like the JConsole, with additional features of a commercial profilers. You could profile your application by CPU & Heap utilization (by class/method). You can even profile a server remotely, check out for documentation.
It's a must to have tool for java developers...
Reference:
https://visualvm.dev.java.net/features.html
http://blip.tv/file/1582849
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