equals, hashCode and toString in Java
Java interview exercise on Records, classes & interfaces, difficulty 2 of 3. Solve it in the editor beside a worked example, or cold in Interview mode with the example hidden; the tests run the moment you do.
Write class Money with a constructor Money(long cents, String currency), accessors cents() and currency(), equals and hashCode based on both fields (so a HashSet treats equal amounts as one), and toString rendering "12.34 USD" (two decimals, a space, the currency).
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Interview mode hides the example: solve it from memory, without the hint or the solution, and it counts as solved cold. Progress is saved in your browser, and in your account if you sign in.