Why do I need a functional Interface to work with lambdas?
What is use of Functional Interface in Java 8?
Replace Lambdas with method reference. Convert String to Integer value using Lambdas if functional interface extends another interface is it still a functional interface? What reason is there for C# or Java having lambdas? Bundlor not working properly with Java 8 lambdas Understanding when and how to use Java 8 Lambdas Lambdas in FunctionalInterfaces in Java Lambdas and functional interfaces with generic throw clauses Callable<Void> as Functional Interface with lambdas Java 8 lambdas group list into map Convert List of List of Object to a map - using lambdas in java 8 How do I return objects with lambdas java How to add object into a list inside of the other list using Java 8 lambdas Java lambdas, stateless lambdas and parallel execution Java functional interface Get a list of classes lambdas Using lambdas as methods of a class in Java Use of Functional Interface in Java 8 Using lambdas in command pattern Turning iteration solution into functional with help of streams and lambdas Is there a way to compare lambdas? Collect values from list of POJO using Functional interfaces (lambdas) Java 8 lambdas execution sort a list of characters using lambdas in java Override a default method using lambdas Get the product of a list using java Lambdas Java 8, equals, == and Lambdas Can I override toString method of functional interface in JDK8 using lambdas Java Debug Interface, Lambdas and Line Numbers