Java 8 cheat sheet - lambdas, streams - interview questions
Collection of 10-15 min tasks usually asked in tech interviews in various levels of difficulty. Start in a TDD fashion understanding the task to solve and putting it in a junit test. Continue with as many iterations needed until tests are all green.
Visit https://webzbuzz.blogspot.co.uk/2017/10/interviewing-in-uk-back-to-roots-java-8.html for a detailed post on this code.
This is a simple intellij based project - no maven - may need to configure junit in your editor to run.