I am trying to generate a simple smart contract wrapper using solc and web3j in ubuntu.
I have downloaded the source as defined in https://docs.web3j.io/command_line.html
Release package can be obtained from https://github.com/web3j/web3j/releases/tag/v4.1.0.
I have download the source from https://github.com/web3j/web3j/archive/v4.1.0.zip
After unwrapping the zip package I can't find any bin directory as the document page shows
unzip web3j-<version>.zip creating: web3j-3.0.0/lib/ inflating: web3j-3.0.0/lib/core-1.0.2-all.jarcreating: web3j-3.0.0/bin/ inflating: web3j-3.0.0/bin/web3j inflating: web3j-3.0.0/bin/web3j.bat
How to get the bin directory?