Assignments

PublishedSep 30, 2026 Updated— DueOct 6, 2026	Assignment 6 — Hash sets and queues Build a hash set of your own, and make a key that cannot move. Then three collections that do not look anything up: a stack, a queue and a priority queue.
PublishedSep 25, 2026 Updated— DueSep 29, 2026	Assignment 5 — Collections Use the library’s set and map to count words. Then build a list of your own out of nodes, and use an iterator to remove from a list without breaking it.
PublishedSep 16, 2026 Updated— DueSep 22, 2026	Assignment 4 — Ordering Teach `Matrix` its natural order so `Arrays.sort` will sort it, then write comparators for the orders it does not have. Find the place where `compareTo` and `equals` disagree, and fix it. Then do the whole thing again to `Fraction`, where the disagreement never happens.
PublishedSep 9, 2026 Updated— DueSep 15, 2026	Assignment 3 — Matrix Build an immutable `Matrix`. Constructors that copy their input rather than borrow it, an `equals` with the `hashCode` that has to come with it, and arithmetic that refuses a shape it cannot handle.
PublishedSep 2, 2026 Updated— DueSep 8, 2026	Assignment 2 — Fraction Finish the `Fraction` class we wrote together: strengthen its invariant so that every fraction is stored in lowest terms, add the arithmetic that gets to assume it, and make it a real `Number`.
PublishedAug 24, 2026 UpdatedAug 28, 2026 DueSep 1, 2026	Assignment 0 — Git and GitHub Text and submission on Brightspace.
PublishedAug 24, 2026 UpdatedAug 28, 2026 DueSep 1, 2026	Assignment 1 — Setup Java, IDE, Git, GitHub, Classroom50

Exams

Midterm — TBD.
Final — TBD.