With Apache httpd-2.4, NameVirtualHost Directive is deprecated. If we happen to bring over httpd.conf from old version to newer httpd-2.4 and have NameVirtualHost *:80 then we will find this warning. We can simply remove NameVirtualHost directive in this case.
$ /c/Apache24/bin/httpd.exe -S
AH00548: NameVirtualHost has no effect and will be removed in the next release
Usually, we use virtual hosts (vhosts). With this effect, if … Continue reading
Switching wordpress multisite sub-directory setup to sub-domain network… At first, I’ve installed my wordpress multisite with path-based (sub-directory). But then, I would like to switch it to domain-based (sub-domain). I’ve read through wordpress codex and learned that there is no problem at the script end. At some point, the doc … Continue reading
Profiling or monitoring heap size in Java or JavaEE app At the normal operation, the Sawtooth wave should be observed. If heap size never come back after heavy weight process, passing critical region or entities loading then better watch out for “Data Cancer”. Sometime, it is way too much or … Continue reading
UPDATE: You can now clone or download BlueJ project from github. https://github.com/victorskl/demo-java This article try to explain the simplest approach in 10-steps coding about Java GUI programming using Swing/AWT. The main focus is understanding the concept and simple programming practice. Concepts Java GUI facilities have The container classes The component … Continue reading
Github UPDATE: You can now clone or download BlueJ project from github. https://github.com/victorskl/demo-java Polymorphism in OOP Polymorphism is kind of powerful concept in Object-oriented programming. The following are quick overview. simply means many forms object variable reference polymorphic value, i.e. referencing many underlying concept is computer memory storage i.e. how … Continue reading