As you can see, there is nothing special about the interfaces defined in the java.util.function package. They are regular Java interfaces that comply with all of the traditional rules of syntax.

The java.util.function package contains well over 40 different components, but if you can garner a good understanding of consumers, predicates, functions, unary types and suppliers, knowledge of the ...

class java.util.ArrayList class java.util.LinkedList In this case, the implementation methods for ArrayList, ... The design pattern template method is good example of using abstract classes.