moto equivalent library for java/kotlin

HI there,

Thank you for reaching out to us. It seems that the library you are talking about is a 3rd party library implemented for Python. You can make use of AWS SDK for Java to create AWS services using Java however this does not contain the mock functionality of Moto library.

Unfortunately I cannot comment on any 3rd party library that might provide your desired functionality. I am sorry for the inconvenience this might cause to you.