问题
I have searched all over the internet for about two days now. I have found a lot about how to find the CPU usage using VB and anything in the .NET framework. I am not using the .NET framework so these are irrelevant, I feel.
What I really need is results similar to the ones shown in the "CPU Usage" section in a Windows Task Manager under the "Performance" tab. If I could find a way to mimic that calculation, then that is exactly what I am looking for. I need the percentage of CPU Usage.
Obviously, Java is not the ideal language for finding the CPU usage of a computer, but that is the language I am using and I have been able to get everything else I need about the computer except this.
I am using Windows 7 with Java version 7 update 21. Eclipse is my IDE.
This is my first time posting a question on here, so if I have left anything out or something is not clear, please ask and I will do my best to explain more of what I mean.
回答1:
There are a couple of ways to do this; one is to run a command-line tool and parse the output. On Windows 7, you can run
c:\Windows\system32\typeperf "\processor(_total)\% processor time"
Try it -- it prints a few lines of sampled CPU load data.
Another way is to use OperatingSystemMXBean .
来源：https://stackoverflow.com/questions/16840594/finding-the-average-cpu-usage-for-windows-machine-in-java