mjson refrence error in peer to peer nework code

[Shivam Poddar]

I have the following code from the tutorial present on HyperGraphDB webpage for  Peer-to-Peer Network. 

import java.io.File;

import java.util.concurrent.Future;

import org.hypergraphdb.peer.HyperGraphPeer;

import org.hypergraphdb.*;

public class SimpleP2P {

public static void main(String[] args)

{

    File configFile = new File("hgp2p.json"); 

    HyperGraphPeer peer = new HyperGraphPeer(configFile);   //Error: The type mjson.Json cannot be resolved. It is indirectly referenced from required .class files

    Future<Boolean> startupResult = peer.start();        

    try

    {

        if (startupResult.get())

    {

        System.out.println("Peer started successfully.");

    }

    else

    {

        System.out.println("Peer failed to start.");

        peer.getStartupFailedException().printStackTrace(System.err);

    }

    } 

    catch (Exception e)

    {

        e.printStackTrace(System.err);

    }

}

}

I have included following jar files:

 1. hgdbje-1.3.jar

 2. hgdb-1.3.jar

 3. hgdbp2p-1.3.jar

 4. je-5.0.34.jar

 5. smack-3.1.0.jar
 5. smackx-3.1.0.jar

I also included the mjson jar file but I still got the same error. Please help