What is Web3j?
It is a lightweight, highly modular, reactive, type safe Java and Android library for working with Smart Contracts and integrating with clients (nodes) on the Ethereum network. This allows you to work with the Ethereum blockchain, without the additional overhead of having to write your own integration code for the platform.
Web3j is a tool in the Java Tools category of a tech stack.
Web3j is an open source tool with GitHub stars and GitHub forks. Here’s a link to Web3j's open source repository on GitHub
Who uses Web3j?
Companies
11 companies reportedly use Web3j in their tech stacks, including Trialine, dKargo, and Web3 Labs.
Developers
31 developers on StackShare have stated that they use Web3j.
Web3j's Features
- Complete implementation of Ethereum's JSON-RPC client API over HTTP and IPC
- Ethereum wallet support
- Auto-generation of Java smart contract wrappers to create, deploy, transact with and call smart contracts from native Java code (Solidity and Truffle definition formats supported)
- Reactive-functional API for working with filters
- Ethereum Name Service (ENS) support
- Support for Parity's Personal, and Geth's Personal client APIs
- Support for Infura, so you don't have to run an Ethereum client yourself
Web3j Alternatives & Comparisons
What are some alternatives to Web3j?
JavaScript
JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.
Python
Python is a general purpose programming language created by Guido Van Rossum. Python is most praised for its elegant syntax and readable code, if you are just beginning your programming career python suits you best.
Node.js
Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
HTML5
HTML5 is a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web. As of October 2014 this is the final and complete fifth revision of the HTML standard of the World Wide Web Consortium (W3C). The previous version, HTML 4, was standardised in 1997.
PHP
Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.
