SQLLDR commands only work in SQL Loader.
What exactly are your requirements?
How can I use sqlldr command on SQL Developer version 184.108.40.206.
Right now I am able to use that command through command prompt but my requirement is that use that command on SQL Developer.
That seems like a silly requirement.
Why would anyone 'require' you to use the wrong tool for the job when you already know how to use the right tool?
Go back to whoever gave you that requirement and give them some 'learnin'!