In the following section we will look at different components which makes part of the Apache Flink ecosystem. The below image and the following explanation was taken from this source, big thanks to ...

为了克服函数式接口的这种脆弱性并且能够明确声明接口作为函数式接口的意图，Java8增加了一种特殊的注解@FunctionalInterface（Java8中所有类库的已有接口都添加了@FunctionalInterface注解）。 让我们看一下这种函数式接口的定义： ...