how to use zoho java sdk or node js to build make our own zoho crm api

how to use zoho java sdk or node js to build make our own zoho crm api

Hello everyone, I am looking for a solution to use ZOHO CRM API more easily. So can you guide me on how can I use Zoho crm java SDK or node js to make my own zoho crm api ? do you have sample project to help me ?