Tasks | Level 1 | Lesson 8

For those interested, the idea behind the null object pattern is this. When I'm writing normal code with normal (non-null) objects, I should create something like a sibling class of my class, which will inherit the same interface as my class does and provide empty implementations of the methods that my class implements normally. If someone got a better understanding, please share:).

I think that course could be so much better if each level starts with many simple tasks like that, teaching simple concepts and on the end each level tasks like that from previous page.

Both of these were quite a bit easier than some of the other recent tasks. Kind of a relief!

I like task "path 101" because it is teaching you to look through the documentation of the Path class in order to find a method that fits.

task path 101 : key is read path.relativize method