JNI调用问题，供参考

    public interface ormLibInterface extends Library {       
        ormLibInterface Instance = (ormLibInterface)Native.loadLibrary("MOmrCom", ormLibInterface.class);
        int OmrS(String s); //发送
        int OmrG(byte[] s); //接收
    }
    public ormLibInterface instance = ormLibInterface.Instance;

    /** 送命令 */
    public int OmrS(String command){
        return instance.OmrS(command);
    }
      /** 送命令 */
    public int OmrG(String command){
        return instance.OmrS(command);
    }