Code (Java) works in Eclipse but not on SoloLearn - Is there anything I need to consider when copy and pasting code?

Question

I coded a program which is capable of converting metric lenght units into each other in the "Eclipse"-environment. Now I would like to share this code with you on SoloLearn but the copied and pasted code doesen't work here and I can't figure out why.
Is there anything I need to consider when importing code to this plattform?
Thanks for your Help!
You can find the code here:
https://code.sololearn.com/cMIQ63S0KRZS/#java

Answer 1

sololearn has limited input. all input needs to be entered when the program starts

5
4
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3

like that and when you loop and recall input, it errors out

Answer 2

It works for me.

Some things you will need to watch out for:
* What @Justin said
* Packages
* Having classes on separate files
* When pasting the spacing / indentation might get very messy.