External library not available when deploy with fat-jar

Question

I'm using in my program the bluecove library.
While running the program via eclipse, all works smooth. I'm now trying to deploy my program, and following this post i'm using fat-jar.
When i run the jar file (created by fat-jar), the library can't be located, and i'm getting the exception BlueCove libraries not available as result of this line local = LocalDevice.getLocalDevice();.

In the fat-jar window i tried also to add bluecove-2.1.0.jar to the Class-Path place, and also with the path \src\JoJoServer\bluecove-2.1.0.jar.
I tried also to place the bluecove's jar file in different folders, such as the src, or an external folder.

Although i know it's not recommended, i tried the option of One-Jar, nevertheless it didn't help.

To run the jar (the one created by fat jar) i simply double click the file.
What i'm missing?

This is the entire code:

import java.io.IOException;
import javax.bluetooth.BluetoothStateException;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.UUID;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.io.StreamConnectionNotifier;

@Override
public void run() {
    // retrieve the local Bluetooth device object
    LocalDevice local = null;
    StreamConnectionNotifier notifier;
    StreamConnection connection = null;

    // setup the server to listen for connection
    try {
        local = LocalDevice.getLocalDevice();
        local.setDiscoverable(DiscoveryAgent.GIAC);

        UUID uuid = new UUID("0000110100001000800000805F9B34FB", false);
        System.out.println(uuid.toString());

        String url = "btspp://localhost:" + uuid.toString() + ";name=RemoteBluetooth";
        notifier = (StreamConnectionNotifier)Connector.open(url);
    } catch (BluetoothStateException e) {
        System.out.println("Bluetooth is not turned on.");
        e.printStackTrace();
        return;
    }

    // ...
}

enter image description here

score 0 · Answer 1 · answered Nov 02 '14 at 10:37

I have no clue what could be your problem, but I've tried the process and everything works, so just a summary of what I've did. Maybe you will figure it out by following it...

I don't understand how the posted code could be the entire, I see no class definition. :) So I've modified it to the main method and it works both from the Eclipse and also by running the JAR generated by the FatJar.

The modified code of the BTTest class:

package test;

import java.io.IOException;
import javax.bluetooth.BluetoothStateException;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.UUID;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.io.StreamConnectionNotifier;

public class BTTest {

    public static void main(String[] args) throws Exception{
        // retrieve the local Bluetooth device object
        LocalDevice local = null;
        StreamConnectionNotifier notifier;
        StreamConnection connection = null;

        // setup the server to listen for connection
        try {
            local = LocalDevice.getLocalDevice();
            local.setDiscoverable(DiscoveryAgent.GIAC);

            UUID uuid = new UUID("0000110100001000800000805F9B34FB", false);
            System.out.println(uuid.toString());

            String url = "btspp://localhost:" + uuid.toString()
                    + ";name=RemoteBluetooth";
            notifier = (StreamConnectionNotifier) Connector.open(url);
        } catch (BluetoothStateException e) {
            System.out.println("Bluetooth is not turned on.");
            e.printStackTrace();
            return;
        }

        // ...
    }
}

To run or produce it, I have just put the bluecove library in the build path and created the fat jar with a simple way: http://oi60.tinypic.com/vg1jpt.jpg

Starting the generated jar from command line:

D:\testProjects\bttest>java -jar bttest_fat.jar
BlueCove version 2.1.0 on winsock
0000110100001000800000805f9b34fb
BlueCove stack shutdown completed

Can you post a difference to your process?

External library not available when deploy with fat-jar

1 Answers1