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 281c68745e Clean up exception-related hints		9 lat temu
..
example/java	perfect-numbers: update to canonical tests v1.0.0 (#336)	9 lat temu
main/java	remove final from class declaration in perfect-numbers exercise	9 lat temu
test/java	Clean up exception-related hints	9 lat temu