Shelter CSV Import and Report

M4 practical task: Collections, Files, and Streams.

Vladlen Medvedev

Done

• CsvImportService: reads intake.csv, validates rows, skips invalid ones with SLF4J warnings
• Blank age treated as unknown, non-numeric age and bad dates rejected
• ShelterAnalyticsService: all required collections built
  • List allAnimals
  • Set uniqueSpecies (alphabetically sorted)
  • Map<String, List> animalsBySpecies
  • List animalsNeedingVetInput (animals with unknown age)
• Stream-based metrics: vaccinated/unvaccinated counts per species, oldest animal per species (unknown ages excluded)
• ReportExportService: writes output/upload-report.txt with totals, per-species breakdown, oldest animals, and needs-vet-input list

Not done

Stretch goals skipped:

• Optional for missing age
• JSON export
• Multiple CSV files via Files.walk()
• Timestamped report filenames
• Processed-files registry
• Invalid row numbers in report

Have a great day!!