sfiss questions

sfiss answers

• Testing lazy initialization by j.u.f.Supplier with Mockito
• An abstract Java class with a listener that uses the concrete class in its callback
• Spy a service spring having transactional methods
• Java Hamcrest Matcher check if list contains another list
• Jackson Polymorphism: Nested Subtypes
• Jersey and HK2 ServiceLocator
• Why is lambda return type not checked at compile time?
• Parsing Date in UpperCase to LocalDate
• Generate an infinite Stream<Integer> containing the integers (0, 1, -1, 2, -2, 3, -3, ...)
• Collectors.toMap write a merge function on a different attribute of object than the one which is not used as value