lots of exercises in java... from https://github.com/exercism/java

Stuart Kent 54cf4a6c28 Restructure exercise directory Reference solution directory was renamed and move to the always-excluded-from-delivery .meta folder.		9 年前
..
.meta/src/reference/java	Restructure exercise directory	9 年前
src	Restructure exercise directory	9 年前
README.md	Replace exercise templates with track-level default	9 年前
build.gradle	poker : add to track	9 年前

Poker

Pick the best hand(s) from a list of poker hands.

See wikipedia for an overview of poker hands.

To run the tests:

$ gradle test

For more detailed info about the Java track see the help page.

Source

It's possible to submit an incomplete solution so you can see how others have completed the exercise.