Final answer:
Yes, one can write Apex code through the Salesforce user interface using the Salesforce Developer Console or other advanced tools like Salesforce Extensions for Visual Studio Code.
Step-by-step explanation:
Yes, it is possible to write Apex code from the user interface in Salesforce. Apex is a strongly-typed, object-oriented programming language that allows developers to execute flow and transaction control statements on the Salesforce platform server in conjunction with calls to the API.
Writing or editing Apex code can be done through the Salesforce Developer Console, which is accessible via the user interface.
You would navigate to the Developer Console through the Setup menu, and from there, you can write new Apex classes and triggers, or edit existing code. Additionally, you can use other tools like Salesforce Extensions for Visual Studio Code or Illuminated Cloud for more advanced features.