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 anni fa
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.meta/src/reference/java	Restructure exercise directory	9 anni fa
src	Restructure exercise directory	9 anni fa
README.md	Replace exercise templates with track-level default	9 anni fa
build.gradle	Format build.gradle files	9 anni fa

Bracket Push

Given a string containing brackets [], braces {} and parentheses (), verify that all the pairs are matched and nested correctly.

To run the tests:

$ gradle test

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

Source

Ginna Baker

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