Using Java SDK Samples without password grant

Hi all.

I’m trying to run Java SDK Samples to gain some knowledge in order to develop my own app.
The thing is when I requested a ClientID, TTN answered me that they don’t issue the Password grant, only the Authorization_code.

This way I have to use the AuthorizationCodeSync and follow the redirect_uri link to manually copy and paste the code.

I want to be able to create and manage applications and devices without having to interact with my app.

Can anyone help me? Am I getting it all wrong? :confused: