Which Java JDK Should You Use?
Lewis Coosner
2023-10-11
Java programmers need to decide which version of Java to use. They also need to decide which Java JDK to use. Lewis looks at some options.
Programming
Off-by-One Errors
Lewis Coosner
2023-10-04
A quick look at off-by-one errors and fence-post errors.
Why Do Computers Count From Zero?
Lewis Coosner
2023-09-27
Ever wondered why Java arrays start from zero? Lewis explains
Coding matters: In with the old
Jacqui Coosner
2023-09-21
Shiny object syndrome is when we are distracted by anything new. Programmers like the idea of working on a new system, but there are many advantages to maintenance programming.
AWT vs Swing vs JavaFX
Lewis Coosner
2023-09-20
Sometimes you need to write a rich client graphical user interface in Java. Lewis looks at the standard JSE toolkits: AWT, Swing and JavaFX.
Sealed Classes in Java
Lewis Coosner
2023-09-12
Sealed classes in Java are a way to control inheritance. This is a new feature in Java 17 and provides a cleaner approach than using access modifiers.
Upgrading from Java 8 to Java 17
Lewis Coosner
2023-09-05
There are good reasons to upgrade from Java 8 to Java 17. Big companies don’t upgrade Java versions easily or quickly. Lewis compares the two versions to explain some of the advantages.
Coding matters: Left bananas and chicken lips
Jacqui Coosner
2023-08-24
I’m a stickler for proper punctuation and spelling. Some people roll their eyes at me, but programmers know better. Part of learning to program is learning that every character counts. A missing symbol, or a character in the wrong place, causes an error. And a bracket is not just a
Coding matters: Hello World
Jacqui Coosner
2023-08-17
If you are a programmer, you might remember writing your first Hello World program. It’s a program that does nothing more than display a message on the screen that says "Hello World". Where did it come from? This is a well-established programming tradition. A Hello World program is simple. It
Unnamed Classes in Java
Lewis Coosner
2023-08-16
A look at the JDK Enhancement Proposal on unnamed classes and instance main methods. This will make it easier for novices to learn Java programming.