Java interfaces are different from classes, and it’s important to know how to use their special properties in your Java programs. This tutorial introduces the difference between classes and interfaces ...

The SOLID open-closed principle in Java asserts that a well-designed software component will be open for ongoing extension, but closed to edits and modification. In other words, a Java class that ...

One of the most powerful uses of scripting languages is in "application automation", that is, the idea of automating a long sequence of steps such as: "select paragraph at cursor, indent 3" right, ...

To implement a Java interface, the JRuby class has to declare all supported interfaces using the include<java interface> statement. Unlike a Java-based interface implementation, the return type or ...