Having recently worked with a project employing Java 8, I whole-heartedly agree. The FP in Java 8 is so crippled as to be useless. Every time you use a lambda, you need to worry about checked exceptions and wrapping and unwrapping them. Also there is no Unit type, so you have to add `return null` everywhere.

Moreover, the Java collection library is now a hodge-podge of ancient cruft haphazardly mixed with a half-hearted FP interface. Java seriously needs to drop pre 1.5 compatibility, and revamp the whole API.