Hello,

I am very new to Saleforce. 

I was wondering what is the easiest way to deploy the updated Apex class from Sandbox to Production? I just made some small changes in one of our Apex classes. Since I coudn't modify the class in Production, so I made a Partial Copy Sandbox and edited the Apex class there. 

After some physical tests(I didn't write any test file.), it is working good. Now how can I push the updated Apex class to Production? 

I searched a bit on google, it seems like I need to download Eclipse, install Force Package, write test some test coverage and etc. Do you have any easier way to make it happen?

Thank you very much!