Java allows classes to implement multiple interfaces — a capability known as multiple interface inheritance. Suppose you want to write a program that counts the number of times you have failed ...

Interfaces are a completely abstract type that is used to specify a behavior that classes must implement. Throughout this intro to Java interfaces course, you'll gain an in-depth understanding of ...

In other words, a Java class that supports the SOLID open-closed principle will find use in originally un-envisioned scenarios, and be flexible enough to work with newly created classes, interfaces ...

There are numerous new classes, enums, methods, and interfaces being added to JDK 7 that may not get significant coverage in the blogs and articles on Java 7. In this post, I list and describe ...

If you want to take advantage of sorting methods in Java, you'll need to implement the Comparable interface. Written by David Petersheim, Contributor Feb. 17, 2005 at 8:00 a.m. PT ...

If you want to master functional programming, the best place to start is with the Java Function interface. This example will show you four different ways to implement this functional interface in your ...