How to "automate" the execution of a java script?

Question

Java

Hello!
In short, it is necessary to parse the key for the program from the site (this is not a jsoup, selenium problem). The problem is the following - how can I then automatically insert the received trial key into the program window?)) Maybe there is some kind of library for this in Java? I don’t think that the api of the program has the ability to parse the key)))))
Thanks in advance)

Answer 1

Link to a useful resource where I found the solution -
seleniumsimplified.com/post/2016-01-14-can-i-use-s...

Answer 2

And this is already punishable and very painful =)

Answer 3

Well, can you feed it to the command line? or in storage