If you run openapi-generator-cli generate -i api.yaml -g spring -o ./client twice without cleaning the output folder, what happens?

medium📝 Predict Output Q5 of 15

Spring Boot - API Documentation

If you run openapi-generator-cli generate -i api.yaml -g spring -o ./client twice without cleaning the output folder, what happens?

AThe generator appends new code to existing files

BThe generator creates duplicate files with suffixes

CThe command fails with a directory not empty error

DThe existing client code is overwritten with the new generated code

Step-by-Step Solution

Solution:

Step 1: Understand default behavior of openapi-generator-cli
By default, the generator overwrites files in the output directory without appending or creating duplicates.
Step 2: Confirm no error on existing folder
The tool does not fail due to existing files; it replaces them silently.
Final Answer:
The existing client code is overwritten with the new generated code -> Option D
Quick Check:
Re-running generator overwrites output files [OK]

Quick Trick: Generator overwrites existing files by default [OK]

Common Mistakes:

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