Comparable, Composition, and Comparator: the Bridge into CSCD 211

Where you are: Week 0 review > Comparable, composition, and Comparator

This part of the review is three short lessons. Work them in order:

1. Comparable and compareTo: the natural order, the sign contract, and multi-key comparisons.
2. Composition: a class that has another class as a field, and delegating to the part.
3. Comparator: a swappable alternate ordering, as a named class or a lambda.

These three lead straight into CSCD 211: comparators taken further, and composition taken further.

Resources

Canonical: BJP (Reges and Stepp) §8 (composition), §10.2 (Comparable), §13.1 (Comparator sorting); Liang 10e §10 (composition), §13 (Comparable). Section numbers are grounded from the published tables of contents; exact page numbers depend on the printing and are pending a faculty spot-check.