This can’t be answered in just a blog entry but I try to give a quick overview.
At some point you will learn about concurrent programming. The Java Memory Model is the essential concept you need to learn. But it’s no easy to grasp as a beginner. I try to explain some of the most important aspects.
You may wonder if double checked locking (DCL) works in Java. It does and it doesn’t. I explain why. Continue reading “Double Checked Locking in Java”
So Java has references. But what about pointers and pass-by-reference? References in Java are different to PHP, C# and other languages. And this can cause some confusion. Continue reading “What are References in Java?”
In Java it’s important to know what references are and how they are used. So it’s important to know what operations can be performed on references.
Continue reading “What Operations can be performed on a Reference in Java?”
Java (both the language and the JVM) are not aware of constants. To reduce confusion it’s better to not use the term “constant” in Java code, unless it’s actually a universal constant. Continue reading “Java knows no Constants”
A language can’t be slow. Or how fast do you think English is?
And modern JVMs are highly optimized. Continue reading “Java is not slow”
Here’s some advice to all who have just begun learning Java. This also serves as an overview to my blog, where I write about all kinds of misconceptions and common problems with programming in Java. Continue reading “Dos and Don’ts”
Some Mammals can fly. Dog extends Mammal, but it can’t fly. The term “extends” leads to some misconceptions. Continue reading “Misconceptions about the “extends” Keyword”