com.sun.management.OperatingSystemMXBean mxbean =

      (com.sun.management.OperatingSystemMXBean)

      ManagementFactory.getOperatingSystemMXBean();

     System.out.println("操作系统: "+mxbean.getName());

     System.out.println("CPU数量:" + mxbean.getAvailableProcessors());

     System.out.println("虚拟内存:"+mxbean.getCommittedVirtualMemorySize() /1024 + "KB");

     System.out.println("可用物理内存:"+mxbean.getFreePhysicalMemorySize() / 1024 + "KB");

     System.out.println("Free Swap Space Size :"+mxbean.getFreeSwapSpaceSize() / 1024 + "KB");

     System.out.println("Process CPU Time : "+mxbean.getProcessCpuTime());

     System.out.println("总物理内存大小:"+mxbean.getTotalPhysicalMemorySize() / 1024 + "KB");

     System.out.println("Total Swap Space Size:"+mxbean.getTotalSwapSpaceSize() / 1024 + "KB");