Here we have a simple Swing app that now has the need to add a time-consuming task, and we need to be updating a progress bar while it runs.
The current solution runs entirely on the EDT (packaged 100% inside the AnalysisService class), and as such, blocks
the progress bar from being updated/repainted.
I have attempted to add AnalysisWorker (a Swing Worker) however it still appears to block the EDT somehow.
To change the code over to use the AnalysisWorker, see the code comments inside SimpleApp's on-click handler for
the analyzeButton. You just need to comment-out a try-catch block and uncomment the worker code.
Additionally, the solution needs:
- To handle both checked and unchecked exceptions being thrown from inside the worker (if it makes any difference which kind is thrown); and
- Conditionally prompt the user with a
JOptionPanewith code that is running inside the worker - Return a result back to the EDT so we can update the UI based on the computed result from inside the worker
- Java 8+
- The build uses the Gradle Wrapper so you don't even need Gradle installed
./gradlew clean build shadowJar && java -jar build/libs/simple-app.jar