Question

Hi i cant able to use getProcessCpuTime() or getProcessCpuLoad() or getSystemCpuLoad() in my java program. I used like below.

ManagementFactory. getOperatingSystemMXBean().getProcessCpuTime();

also like this

( (OperatingSystemMXBean) getOperatingSystemMXBean() ).getProcessCpuTime()

But its showing error like method getProcessCpuTime() is not found. I included the following header files. Is that enough or i need to use any more.?

import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;

Can anyone please suggest me how to use these methods. am using jdk1.6. And my code is below

import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

public class printUsage {

public static void main(String[] args) {
OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();

System.out.println("getCpuProcessTime()" + " = " + operatingSystemMXBean.getProcessCpuTime());
System.out.println("getCpuProcessTime()" + " = " + operatingSystemMXBean.getSystemCpuLoad());
System.out.println("getCpuProcessTime()" + " = " + operatingSystemMXBean.getProcessCpuLoad());
}

}

Answer 1

import following one

 import com.sun.management.OperatingSystemMXBean;

Not

import java.lang.management.OperatingSystemMXBean;

Use following code.

OperatingSystemMXBean operatingSystemMXBean = (com.sun.management.OperatingSystemMXBean)ManagementFactory.getOperatingSystemMXBean();

I am getting valid results with this code.