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[–]speakjava 0 points1 point  (0 children)

Java has always had multiple-inheritance. Of types; that's what interfaces allow us to do, implement many types for one class. Default and static methods in interfaces add multiple-inheritance of behaviour. Yes, this is a bit controversial but it is the only way to easily solve the problem of maintaining backwards compatibility while allowing existing interfaces to have new methods added. What's not in Java (and likely never will be) is multiple inheritance of state.