What ROS Java Architecture can support?

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Hello everyone,

I am new to ROS Java environment, base on what I have seen so far I want to confirm with the community what ROS Java architecture can support.

1. Is ROS Java environment use a hosted container architecture? What I mean is that, after I create my ROS Java code / bean I have to deploy into the ROS container in order for it to run?

2. If this is the case, is it possible not to use a hosted container architecture to run my ROS Java code? Can I run my ROS code standalone outside to ROS container to interact with the ROS Core? I need to deploy my Java code into another Java container environment, which does not allow me to deploy to ROS container environment.

Thanks, Mason Tran