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

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 lat temu
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main/java	Clock: add to track (#260)	9 lat temu
test/java	Merge pull request #608 from exercism/clock-version	9 lat temu