Convert Small Java Function LIbrary to Delphi

I need a 150 line Java coded function set converted to a delphi class. There will need to be an Interface to the class and the class should exist in a single delphi unit file. The unit file should not use external libraries and should be fully compatible with the latest Delphi 10.3 and above. There should also be dunitx test application that tests each class method.

I appreciate this is a small job but a successful completion will most certainly lead to additional work over the next 12 months. What we are looking for is a coder that has a good understanding of Java Code and Delphi.