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How to use getSystemCpuLoad() in JMX

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By User



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());

}



}




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Comments

  1. Tips For AllFebruary 10, 2012 at 1:36 PM

    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.

    ReplyDelete
  2. Tips For AllFebruary 10, 2012 at 1:36 PM

    Take a look on the following javadoc: http://docs.oracle.com/javase/6/docs/api/

    See what methods are defined for OperatingSystemMXBean. Your problem is that you are looking for methods defined in com.sun.management.OperatingSystemMXBean into java.lang.management.OperatingSystemMXBean.

    Package com.sun is mostly for internal use of java creators, not for application developers. You should use classes from package java.lang.management and refer to appropriate API doc.

    ReplyDelete

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