So I'm trying to build the most simple Daap to make a POC. I just want to register messages/strings on a block so that any given duplicate messages are ignored.

I've done a lot of research but I'm overwhelmed by the information there's available. The problem I'm having is to have a decent test net/private net to test my application.

I've tried Hyperledger Fabric but there are some broken issues and it requires a lot of stuff that I don't yet fully understand (like docker and vagrant for instance)

I made a lot of progress working with Go-Ethereum framework which I can use the Web3j API to send my requests. But for some reason, I'm having difficulty now connecting to a ROPSTEN network or even creating a private network to test(using $geth --testnet or $geth --rpc and every possible combination). It just won't start or it will take too long and then it connects to Ethereum Blockchain which is not what I want(for now).

So does anyone know some framework or even a simple way to create our private network without geth?

I just need to initialize a private-net that I can use with web3j, then everything will fall into place.

Thank you in advanced.

2 Answers 2


You absolutely want to use truffle and test-rpc. It takes about two seconds to setup, and even less time to build a 'wireframe' dApp that will work without geth. Many, many people use this for full fledged development, let alone POC work.

Here's the repo: https://github.com/trufflesuite/truffle

  • sorry, I accidentally commented on the answer below when I wanted to answer here. It doesn't let me edit or delete it.
    – 1111 1100
    Aug 17, 2017 at 9:49

Here you go. Create a folder on you c drive. In my case its amrik, you can rename to anything that you want.

// setup the server locally

geth --datadir C:\amrik\datadir --dev console

// start mining server and keep the window open.

geth --datadir C:\ amrik \datadir --dev --mine --minerthreads 1

// open new window start for the transactions

geth --datadir C:\ amrik \datadir --dev attach \.\pipe\geth.ipc

Now are you ready to fire more commands. this is private, so should not have any access issues. Let me know

  • Thank you so much for your fast reply. So I was able to use testrpc and it really worked liked a charm. But when testrpc is initiated, it creates 9 wallets by default. My question now is....how can I access the physically this wallet files? Or how can I reference them? access them? For instance, when I use Mist or Ethereum Wallet and when I create a new account, it saves the account address in the keystore directory, and then I'm able to provide a location to retrieve the account (and respective password to unlock it).
    – 1111 1100
    Aug 16, 2017 at 17:42
  • I just need someway to access/use them. My app is in JAVA, I'm using web3j API. The testrpc log console outputs "web3_clientVersion" everytime I try to run the app so I know that is working but if I wanted to simulate a transfer of funds between accounts, how can I achieve this using testrpc? In the very end after the server has started and after "Mnemonic", there's a "Base HD Path: m/44' /60' /0' /0 {account_index}" but I don't really know if this what I'm looking for or even if it is a path that I can access to.
    – 1111 1100
    Aug 16, 2017 at 17:51

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.