Picture of Lewis Coosner

Lewis Coosner

An electrical engineer by profession, Lewis has been involved in software development since the 1980s. He has programmed in C, C++, Fortran, Assembler, Pascal, Java and Visual Basic, and has extensive experience in the development of systems in the military and engineering environment. Lewis is primarily responsible for developing and presenting the Java and OO-related courses, and was one of the first two Java lecturers in the country to be certified by Sun Microsystems. In his free time, Lewis cycles, kayaks, hikes, caves, climbs and generally exhausts himself.
More posts by Lewis Coosner
functional interfaces in java

Functional Interfaces in Java

What are functional interfaces and why are they used with lambdas? Lambdas and functional interfaces go hand-in-hand in Java. In this article we discuss some principles of functional interfaces.

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Canonical classes in Java - picture of a canon

Canonical classes in Java

You’ve heard the term “canonical class”, but what does it mean? In Java, a canonical class is simply a well-formed or well-behaved class. The canonical class form is most often used for model classes (also called domain or entity classes).

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JavaBeans and POJOs - image of coffee beans

JavaBeans and POJOs

You’ve heard of JavaBeans. But what are they actually? Java 1.1. introduced the term JavaBean to describe a self-contained, reusable, high-granularity component. The original idea

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