Java implementation of full-stack-asset-transfer-guide smart contract

[bestbeforetoday]

As a Java developer
I want to have a version of the full-stack-asset-transfer-guide smart contract in Java
So that I can use the workshop material in my programming language of choice

The existing TypeScript smart contract is located at full-stack-asset-transfer-guide/contracts/asset-transfer-typescript.

[takayuki-nagai]

We are interested in working on this issue, so could you please assign it to me? My colleague will be handling the code contributions.