If a Java shop can figure how to do that in one day, then it's not a Java shop or they lack context around LLMs and framework won't bridge knowledge gap.
Frameworks like these, and I include Microsoft Semantic kernel and Google' Agent2Agent, just get in the way. Fact is that Agent development is still in early stages. We daily learn more about how to get the most out of LLMs. It used to be "prompt engineering", this morning HN is talking about "Context engineering".
Abstractions and frameworks like these will obfuscate insights one would gain by using LLM +tools etc directly.