Java 8 introduced default methods to evolve the Java Collections Framework, so that it could support the new Streams API without breaking backward compatibility.

Along with default methods, Java 8 evolved the interface language feature to support static methods. You can now declare static methods in an interface. This capability opens up all kinds of ...

The java.util.function.Consumer class has one non-default method named accept which takes a single object as its argument and has a void return type. java.util.function.Consumer<T> Consumer function ...