InfoWorld

Abstract classes and interfaces practicum

Readers have returned quite a bit of feedback concerning, “Abstract Classes Vs. Interfaces” from April 2001. A recurring request asks to see a complete example of using interfaces and abstract classes ...
Ars Technica

interfaces and abstract classes, what am i doing wrong?

I would like MyCorpEmployees to have MyCorpEmployee overlords and underlings, and OtherEmployees to have OtherEmployee overlords and underlings. or, i did yesterday. i'm really thinking along the ...
TheServerSide

Java Supplier interface example for functional programming

Community driven content discussing all aspects of software development from DevOps to design patterns. There are only half a dozen classes you really need to master to become competent in the world ...
TheServerSide

How to use Java's functional Consumer interface example

Community driven content discussing all aspects of software development from DevOps to design patterns. Quite often a Java Stream or other component needs an object passed to it in order to perform ...
Ars Technica

Java - Can an interface define a class?

Obviously that doesn't compile, but I hate to make a file FooType.java with just the 5 lines above in it. Obviously that doesn't compile, but I hate to make a file ...
InfoWorld

Class and object initialization in Java

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...