I've been writing Scala off and on for the last several years. I took both of the Scala courses on Coursera and really enjoyed them. However, I still write a lot of Java. There are a lot of Scala features that I miss while working with Java, and as Java 8 was coming out in early 2014, I thought about feature parity between the two languages. The addition of lambdas to Java is great, but one of my favorite features of Scala is pattern matching, and Java 8 does not include that.