Tell about your experience using and configuring Swagger for API documentation.

Swagger is a tool for documenting and testing APIs. In my experience working with Android projects, I used Swagger for automatic generation of documentation for REST APIs, which facilitated interaction between the frontend and backend.

The setup usually includes:

• Adding annotations in controllers and models (e.g., @Api, @ApiOperation in Java).
• Configuring Swagger UI for easy viewing and testing of endpoints.
• Generating a JSON specification that describes all available methods, parameters, and data models.

An example of an annotation in a Java controller:

@Api(value = "User Controller")
@RestController
public class UserController {

    @ApiOperation(value = "Get user by ID")
    @GetMapping("/users/{id}")
    public User getUser(@PathVariable Long id) {
        // logic to get user
    }
}

This allows for automatically creating understandable documentation and testing the API directly from the browser.