javasunmxbean

Why sun.management.OperatingSystemImpl is package visible?

This class has really helpful methods. I can call them by reflection. But why I forced to do it?

I would like to cast OperatingSystemMXBean to OperatingSystemImpl and call them normal way.

Thanks in advance.

Solution

  • can you explain why you would like to cast OperatingSystemMXBean to OperatingSystemImpl since OperatingSystemImpl implements OperatingSystemMXBean.

    you can use it 

        java.lang.management.OperatingSystemMXBean os = java.lang.management.ManagementFactory.getOperatingSystemMXBean();
    System.out.println(os.getArch());

    or 

        com.sun.management.OperatingSystemMXBean osBean = ManagementFactory
            .getPlatformMXBean(com.sun.management.OperatingSystemMXBean.class);
    System.out.println(osBean.getProcessCpuLoad() * 100);
    System.out.println(osBean.getSystemCpuLoad() * 100);