Ethereum for Java developers

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Use Ethereum to create decentralized applications (or "dapps") that utilize the benefits of cryptocurrency and blockchain technology. These dapps can be trustworthy, meaning that once they are deployed to Ethereum, they will always run as programmed. They can control digital assets in order to create new kinds of financial applications. They can be decentralized, meaning that no single entity or person controls them and are nearly impossible to censor.

Getting started with smart contracts and the Solidity language

Take your first steps to integrating Java with Ethereum

Need a more basic primer first? Check out ethereum.org/learn or ethereum.org/developers.

• Blockchain Explained
• Understanding Smart Contracts
• Write your First Smart Contract
• Learn How to Compile and Deploy Solidity

Working with Ethereum clients

Learn how to use Web3J and Hyperledger Besu, two leading Java Ethereum Clients

• Connecting to an Ethereum client with Java, Eclipse, and Web3J
• Manage an Ethereum account with Java and Web3j
• Generate a Java Wrapper from your Smart Contract
• Interacting with an Ethereum Smart Contract
• Listening for Ethereum Smart Contract Events
• Using Besu (Pantheon), the Java Ethereum Client with Linux
• Running a Hyperledger Besu (Pantheon) Node in Java Integration Tests
• Web3j Cheat Sheet

Intermediate articles

• Managing storage in a Java application with IPFS
• Manage ERC20 tokens in Java with Web3j
• Web3j Transaction Managers

Advanced use patterns

• Using Eventeum to build a Java smart contract data cache

Java projects and tools

• Hyperledger Besu (Pantheon) (Ethereum Client)
• Web3J (Library for Interacting with Ethereum Clients)
• Eventeum (Event Listener)
• Mahuta (IPFS Dev Tools)

Looking for more resources? Check out ethereum.org/developers.

Java community contributors

• IO Builders
• Kauri
• Besu HL chat

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