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Web3j

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FunTester
FunTester
Nov 17, 2023 · Blockchain

Using Web3j to Send Ethereum JSON‑RPC Requests via WebSocket

This article explains how to construct and send Ethereum JSON‑RPC calls such as net_version through a WebSocket connection using the Web3j Java library, including source code analysis, request construction, and a practical example with console output.

EthereumJSON-RPCJava
0 likes · 5 min read
Using Web3j to Send Ethereum JSON‑RPC Requests via WebSocket
FunTester
FunTester
Aug 21, 2023 · Backend Development

Understanding Web3j Asynchronous Calls and JVM Exit Issues

The article analyzes why using Web3j's sendAsync() method can prevent the JVM from terminating, examines the underlying thread‑pool implementation in org.web3j.utils.Async, and offers debugging steps and possible work‑arounds for developers.

JVMJavaWeb3j
0 likes · 7 min read
Understanding Web3j Asynchronous Calls and JVM Exit Issues
FunTester
FunTester
Aug 14, 2023 · Blockchain

Building and Testing an Ethereum Transfer with Java and Web3j on a Local Ganache Testnet

This article walks through setting up a local Ethereum testnet using Ganache, configuring a Java project with Web3j, and implementing code to query the network and perform a signed Ether transfer, providing step-by-step instructions, code snippets, and screenshots for beginners.

EthereumGanacheJava
0 likes · 7 min read
Building and Testing an Ethereum Transfer with Java and Web3j on a Local Ganache Testnet