Java Android蓝牙连接线程示例错误？

为什么Eclipse开发环境抱怨私有修饰符在android中无效？私有类可以有公共成员吗？错误消息为：

类的非法修饰符 连接螺纹；只有公开的，抽象的， 允许进行最终测试

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你有这个文件吗？这只在它是另一个类的成员的类时才起作用

private class ConnectThread extends Thread {
    private final BluetoothSocket mmSocket;
    private final BluetoothDevice mmDevice;

    public ConnectThread(BluetoothDevice device) {
        BluetoothSocket tmp = null;
        mmDevice = device;
        try {
            tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
        } catch (IOException e) { }
        mmSocket = tmp;
    }
    public void run() {
        mAdapter.cancelDiscovery();
        try {
            mmSocket.connect();
        } catch (IOException connectException) {
            try {
                mmSocket.close();
            } catch (IOException closeException) { }
            return;
        }
        manageConnectedSocket(mmSocket);
    }
    public void cancel() {
        try {
            mmSocket.close();
        } catch (IOException e) { }
    }
}