Authoring skeleton - not a student assignment

Three short topics

Java passes copies of reference values; distinguish aliasing from copying.
Implement a copy constructor and compare shallow and deep copies.
Explain reachability, lifetime, and garbage collection.

PBL context

Observe AssignmentQueue’s working, waiting, and completed lists. Prototype an independent snapshot without changing production persistence.

Implementation layers to author

Trace two references to one queue.
Copy the queue and its mutable lists.
Test that changing the snapshot does not alter the original.

Evidence checklist to author

Include empty and populated queues, reference reassignment, and mutation isolation. Link the existing object-storage and scope lessons. Do not describe Java as pass-by-reference.

Publication checklist

Author examples, a CodeRunner exercise, and verifiable assessment checks. Then assign courses.csa.week, remove draft/hide flags, and enable submissions as appropriate.

Code Runner Challenge

Authoring draft - object copying exercise is not ready

View IPYNB Source

// CODE_RUNNER: Authoring draft - object copying exercise is not ready
public class CopyingDraft {
    public static void main(String[] args) {
        throw new UnsupportedOperationException("Draft: author the copying exercise and tests before publication.");
    }
}
CopyingDraft.main(null);

Lines: 1 Characters: 0

Output

Click "Run" in code control panel to see output ...