Functional supplier interface in Java tutorial There are only half a dozen classes you really need to master to become competent in the world of functional programming. The java.util.function package ...

When to use interfaces in Java Interfaces are very useful for decoupling code and implementing polymorphism. We can see an example in the JDK, with the List interface: ...

The Java Function interface is quite simple. It takes a single Java object as an argument, and returns a single Java object when the method concludes. Any method you can conjure up takes an object and ...