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 years ago
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.meta/src/reference/java	Restructure exercise directory	9 years ago
src	Restructure exercise directory	9 years ago
README.md	Replace exercise templates with track-level default	9 years ago
build.gradle	Added Pythagorean Triplet assignment (#187)	9 years ago

Pythagorean Triplet

A Pythagorean triplet is a set of three natural numbers, {a, b, c}, for which,

a**2 + b**2 = c**2

For example,

3**2 + 4**2 = 9 + 16 = 25 = 5**2.

There exists exactly one Pythagorean triplet for which a + b + c = 1000.

Find the product a * b * c.

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.