Add new Java exercises
One of the easiest ways to add new exercises to the Java track is to translate them from other language tracks on Exercism. This page lists all of the problem specifications in the common pool of exercises which have not yet been implemented in Java.
The icon links to the language-independent description of the problem.
The icon links to the canonical test data.
We also link to all the implementations of each exercise in other languages, which you can use for inspiration.
Once you've picked an exercise, follow the instructions in this guide and submit your pull request to the Java track repository on GitHub.
Implement a basic reactive system.
Compute the result for a game of Hex / Polygon
Reparent a graph on a selected node
Generate musical scales, given a starting note and a set of intervals.
Search a file for lines matching a regular expression pattern. Return the line number and contents of each matching line.
Parsing a Smart Game Format string.
Write a Domain Specific Language similar to the Graphviz dot language
Refactor a tree building algorithm.
Score a single throw of dice in the game Yacht
Implement the logic of the hangman game using functional reactive programming.
Refactor a ledger printer.
Use lenses to update nested records (specific to languages with immutable data).
Report network IO statistics