Unlike you used API for system version, there is a API for system information named as SystemGetInfoRequest. You can use it as following
SystemGetInfoRequest sq = new SystemGetInfoRequest();
SystemGetInfoResponse sr = apirunner.run(sq);
try {
System.out.println("Systemname"+ sr.getSystemInfo().getSystemName());
System.out.println("SerialNumber"+sr.getSystemInfo().getSystemSerialNumber());
System.out.println("MemorySize"+ sr.getSystemInfo().getMemorySize());
System.out.println("VendorID"+ sr.getSystemInfo().getVendorId());
System.out.println("TotalProcessors"+ sr.getSystemInfo().getNumberOfProcessors());
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
You can extract all system related information like this. Hope this will work for you.