Ok. Why Google engineers added their own retrolambdas in jack compiler?
Andrey Kulikov

Jack works completely different from Retrolambda. Regarding static code analysis, I’m not talking about intellij. Check out pmd, findbugs and their friends. You’ll be surprised that Java 7 and Java 8 had different set of checks, and you’ll need to spend time to setup this tools to work with Java 8 but with Java 7 checks set.