Add all examples from the tutorial

[albertolluch]

Port to Java all go-based examples from the tutorial.

[dobau]

@albertolluch What that code should to do?

space.Query("stop")

The first example is here, but I don't know what this part do.
Hmmm, and the example I am using gradle. Is it OK for you?

[albertolluch]

Thanks @dobau I will check your example as soon as possible, as well as the best way to upload Java projects. I need to discuss whether to use gradle or anything else with @michele-loreti .

As for your question, the point is that Java and Go deal differently with termination of the main thread/routine: in Java the main thread waits for all pending (non-demon) threads, while in Go the main routine kills all other routines when it terminates.

So, in the examples in Go I sometimes use space.Query("stop") (or a similar blocking action) to prevent termination of the entire application. Sometimes this makes sense in the example, in some other cases it doesn't but I had no time to implement a protocol for termination detection.

[dobau]

Thanks for you answer.

I will try change a little logic about "stop" command.
And about use gradle, maven, or only java without automation build ask to loreti.