Also known as the Java 8 Predicate -- which stems from the JDK version where functional programming was introduced to developers -- this simple interface defines five methods, although only the Java ...

Those are functional Interfaces and Lambda. Java 8 will have a new feature called functional interfaces. Basically, default methods are added to an interface and do not have to be overridden in ...

Here is a lambda expression and Predicate example: The functional Predicate interface gets used extensively by the Java 8 Streams API. Any developer who wants to master functional programming in Java ...

When default methods were introduced in Java 8, some developers thought they ... that lambda expressions can only be used with a functional interface (meaning an interface with only one method ...