Java 8 introduces default solutions on interfaces. If A,B,C are interfaces, B,C can each give another implementation to an summary means of A, triggering the diamond dilemma. Both course D should reimplement the tactic (the body of which might simply forward the call to one of many super implementations), or https://diamond-compiler-game-onl43084.mpeblog.com/55322228/diamond-compiler-online-multiplayer-options