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Java / Quarkus Interview questions

What is Quarkus Dev Mode?

Dev Mode is a local development mode, started with quarkus:dev (or ./mvnw quarkus:dev), that runs the application while watching your source files and automatically recompiling and redeploying changed code as soon as you save, without requiring a manual restart.

./mvnw quarkus:dev
# or
quarkus dev

Beyond live reload, Dev Mode also exposes a Dev UI in the browser (by default at /q/dev) showing installed extensions, configuration values, and extension-specific developer tools, plus continuous testing that reruns affected tests automatically as files change.

Because changes take effect on the very next request rather than through a full application restart, the feedback loop is dramatically shorter than a traditional edit-compile-redeploy-restart cycle, which is one of the features developers most often point to when explaining why Quarkus feels fast to work in, separate from its production startup speed.

How is Quarkus Dev Mode typically started?
What additional tool does Dev Mode expose in the browser?

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