Resource Cleanup on Exception

Learning Objective: Understand that resources are reliably released even when exceptions occur in try-with-resources

Overview

Create a DatabaseConnection class and verify resource is closed even when exception occurs during processing.

Specifications

• DatabaseConnection class: implements AutoCloseable
  • connect(): outputs "Connected to database"
  • executeQuery(boolean shouldFail): throws exception if shouldFail is true, outputs "Query executed" if false
  • close(): outputs "Connection closed"
• In main, test behavior on exception

Output Format

Connected to database
Connection closed
Error: Query failed