Try-with-Resources & AutoCloseable

Automatically manage streams, files, and other closable resources.

Any class implementing AutoCloseable can participate in try-with-resources; the JVM ensures close() executes.

Declare multiple resources in one statement to handle complex workflows cleanly.

Understand suppressed exceptions: if both the try block and close throw, the close exception becomes suppressed.

Lesson check

Which interface must a resource implement for try-with-resources?