Has anybody yet backported Lambda Expressions to Java 7?

Question

Reading about what kind of bytecode Java 8 produces from lambdas, it came to my mind the time when Java 5 was released. Back then there was Retroweaver and other tools for c

Answer 1

There is now Retrolambda for converting Java 8 bytecode, which uses lambda expressions and method references, to work on Java 7, 6 or 5. (Java 1.4 gave verify errors; did not investigate further.)