The programmer's notes

Today during discussion about usage of low level Java tricks I was told that Throwable.getStackTrace() is a very heavy operation. So, I dec...

I have been using eclipse for last 8 years and very glad to be a witness of its continuous improvement. Specifically I mean its compilation ...

Yesterday I was debugging test case that consists of a few similar unit tests. All unit tests call some API that executes tasks with backgro...

One day discovering code in project I am working on I found the following code: try {     module.getClass().getMethod(methodName, Serializ...

Java provides 2 ways to access files: using streams and NIO channels. Streams implement blocked IO: the read() method is blocked until some ...

Following discussion at work where I took a role of advocate of regular expressions I decided to verify how they are really fast. I remembe...

Recently I found out a cool site that allows programmers to verify their programming skills and recruiters to verify the programming skills ...

Today I read the following discussion: How can I determine which class's `main` method was invoked at runtime? The problem was to dis...

Introduction Java is a cross platform language and therefore does not support platform specific features. Windows has a special unique fea...

Can abuse of API be useful? Sometimes it can be! Word "abuse" is defined as the improper usage or treatment for a bad purpose ...

I have just opened Twitter account: https://twitter.com/alexradzin

Java enums are typically used to hold array like data. This tip shows how to use enum for hierarchical structures. Motivation Once upon ...

Very often I had to implement feature that has to do something asynchronously in a minute, day, or at 5PM next Monday. Every time I implem...

When I am writing enum I very often found myself implementing static method similar to standard enum’s valueOf() but based on field other ...

Introduction Enums introduced to Java 1.5 is a very useful and well known feature. There are a lot of tutorials that explain enums usage in...

Introduction Generics is a beautiful feature of Java 1.5. But it has some limitations. One of them is that it is impossible to discover typ...