1 import com.jacob.activeX.ActiveXComponent; 2 import com.jacob.com.Dispatch; 3 import com.jacob.com.EnumVariant; 4 import com.jacob.com.Variant; 5  6 public class TestWMI { 7  8     public static void main(String[] args) { 9 10         Variant wmiNoParam = getWMI("SELECT * FROM Win32_Service WHERE started = 1");11         printProperty(wmiNoParam,"Name","ProcessId");12         Variant wmiWithParam = getWMI("SELECT * FROM Win32_SerialPort","WQL", 0x10|0x20);13         printProperty(wmiWithParam,"DeviceID");14     }15 16     private static void printProperty(Variant vCollection, String... properties) {17         EnumVariant enumVariant = new EnumVariant(vCollection.toDispatch());18 19         while (enumVariant.hasMoreElements()) {20             Dispatch item = enumVariant.nextElement().toDispatch();21             for (String property : properties) {22                 Variant variant = Dispatch.call(item, property);23                 System.out.println(variant);24             }25         }26     }27 28     public static Variant getWMI(String query, Object... param) {29         String host = "localhost";30         String connectStr = String.format("winmgmts:\\\\%s\\root\\CIMV2", host);31         ActiveXComponent wmi = new ActiveXComponent(connectStr);32         Variant[] vs = new Variant[param.length + 1];33         vs[0] = new Variant(query);34         for (int i = 0; i < param.length; i++) {35             vs[i + 1] = new Variant(param[i]);36         }37         Variant vCollection = wmi.invoke("ExecQuery", vs);38         return vCollection;39     }40 41 }