Java SE. Урок 28. Generic / Параметризация / Обобщения

Starting with version 5 of Java, parameterization (generic) of classes and methods was added to the language, which allowed using more flexible and at the same time strict typing, the use of which is especially important when working with collections. Despite all the advantages, there are some difficulties: a) Parameterized variables can only call methods of the Object class. b) It is impossible to create an instance of a parameterized variable. c) References of the same class, but with different parameters cannot be assigned to each other. d) Generic fields cannot be static. e) Static methods cannot have generic parameters.