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The main content of this article is to explain "what are the three open source block chain libraries of java on github". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "what are the three open source block chain libraries of java on github?"

BitcoinJ

The name is very descriptive, don't you think? If you want to know how to create bitcoin wallets and manage transactions between nodes, you should try using BitcoinJ. The project has more and more communities and very good documentation, which is very beneficial to every developer. Of course, as most open source projects that try to gain popularity, it has limitations at the beginning. There are several known security issues with open errors and scalability issues. If you want to understand how the Bitcoin protocol works, it is still very useful. But I don't think it's suitable for production application-- personal opinion.

Web3j

A key word-- Ethernet Square. The second most closely watched cryptocurrency based on this blockchain, a cutting-edge technology. This project allows you to use the ethersquare block chain without having to write your own integration code for the platform. Similarly, the core functions are creating wallets, managing transactions, and smart contract encapsulation. Yes, it can be encapsulated. As part of the etherland project is a special language called Solidity, which is the de facto standard for creating smart contracts. If you want to avoid using the underlying implementation details of smart contracts, use web3j's smart contract wrapper. If that's not enough for you as a developer, I need to tell you that web3j is very active. Good documentation and plenty of examples make web3j my personal favorite.

HyperLedger Fabric

When the enterprise encounters the blockchain. The framework of the Linux Foundation serves as the pillar of the development zone block chain solution. Whether you want to create a simple PoC or a production application, you should see it as a powerful tool. The project is being actively developed by members of the Linux Foundation. Its main focus is on creating and managing smart contracts. The main features are:

Manage the channels for sharing confidential information.

The strategy behind the deal.

Consistent delivery of deals to nodes in the network

If you include HyperLedger Fabric in the software block chain stack, then my advice is to be familiar with other HyperLedger projects. Depending on your needs, you can choose a variety of HyperLedger projects, which will ensure the consistency, scalability and maintainability of the blockchain infrastructure.

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