问 javax.bluetooth.BluetoothStateException: BlueCove com.intel.bluetooth.BluetoothStackBlueZ不可用

<dependency>
    <groupId>net.sf.bluecove</groupId>
    <artifactId>bluecove</artifactId>
    <version>2.1.0</version>
</dependency>

sudo apt-get install bluez libbluetooth-dev
sudo apt-get build-dep bluez-tools

import java.util.Vector;
import javax.bluetooth.DeviceClass;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.DiscoveryListener;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
public class RemoteDeviceDiscovery {
    public Vector getDevices() {
    /* Create Vector variable */
    final Vector devicesDiscovered = new Vector();
    try {
        final Object inquiryCompletedEvent = new Object();
        /* Clear Vector variable */
        devicesDiscovered.clear();
        /* Create an object of DiscoveryListener */
        DiscoveryListener listener = new DiscoveryListener() {
            public void deviceDiscovered(RemoteDevice btDevice, DeviceClass cod) {
                /* Get devices paired with system or in range(Without Pair) */
                devicesDiscovered.addElement(btDevice);
            public void inquiryCompleted(int discType) {
                /* Notify thread when inquiry completed */
                synchronized (inquiryCompletedEvent) {
                    inquiryCompletedEvent.notifyAll();
            /* To find service on bluetooth */
            public void serviceSearchCompleted(int transID, int respCode) {
            /* To find service on bluetooth */
            public void servicesDiscovered(int transID, ServiceRecord[] servRecord) {
        synchronized (inquiryCompletedEvent) {
            /* Start device discovery */
            boolean started = LocalDevice.getLocalDevice().getDiscoveryAgent().startInquiry(DiscoveryAgent.GIAC, listener);
            if (started) {
                System.out.println("wait for device inquiry to complete...");
                inquiryCompletedEvent.wait();
    } catch (Exception e) {
        e.printStackTrace();