Abstract classes and interfaces in Java ... methods can’t. Default methods are the result of great innovations with lambdas and streams, but we should use them with caution. Any Iterable ...

While it seems so basic that it wouldn't require a mention, there's a basic ... and easily correct this Java method modifier issue based on how soon you can refactor. Then, it just comes down to which ...

Furthermore, a variety of methods in the Java Stream API take the functional Consumer interface as an argument, inclusing methods such as collect, forEach and peek. There are only a few key intefaces ...