public interface UsbInfo { String getDeviceID(); String getVendorID(); String getProductID(); // ... } public class UsbInfoImpl implements UsbInfo { @Override public String getDeviceID() { // ... } @Override public String getVendorID() { // ... } @Override public String getProductID() { // ... } // ... } Bundle-SymbolicName: usbinfo Export-Package: com.example.usbinfo Service-Component: OSGI-INF/com.example.usbinfo.UsbInfoImpl.xml <component name="com.example.usbinfo.UsbInfoImpl" instantiation="singleton"> <implementation class="com.example.usbinfo.impl.UsbInfoImpl"/> <service> <provide interface="com.example.usbinfo.UsbInfo"/> </service> </component>