or create new subclasses that inherit from multiple superclasses, which is called multiple inheritance. Multiple inheritance is not supported by Java, and can cause problems such as ambiguity and ...

You can write a simple generic launcher in the following way: public class Launcher{ public static void main(String[] args){ if (args.length>0) { try { Command ...

At JavaZone 2010 I will be giving a lightning talk on APIs that use dynamic subclasses. These APIs make it possible to do things in Java that seem like pure magic. Here are some ideas of what you ...

that must be implemented by subclasses, and concrete methods (methods with a body) that provide default behavior. This repository serves as a practical example of using abstract and concrete classes ...