How to resolve 'Could not find the required version of the Java(TM) 2 Runtime Environment'?

I was encountering the 'Could not find the required version of the Java(TM) 2 Runtime Environment' error when I was trying to install JDK 64-bit on my 64-bit Windows 7 machine.

The reason for throwing such error is that JDK installer is written in Java, therefore you need to have JRE installed. I assume that this is a bug in the Java installer somewhat, because after installing JDK EE, you will have a JRE inside that as well, so you end up having two JREs. Surprisingly, if you install JRE 64-bit and set your %JAVA_HOME% and path variables, you will still see that issue remains the same.

Solution is that you should install JRE 32-bit instead of 64 bit version of JRE. If you install it, then you can install JDK EE or/and Glassfish via the installer. This might sound strange but it is true!

Apache Maven 2.2.1 issues with Ubuntu 11.10

If you are running Maven 2.2.1 (older but latest stable version) and by chance you are still on Ubuntu 11.10 with OpenJDK6, you might run into some issues.

Firstly, remember that it is recommended that you define your environment variables under /etc/environment. Secondly, it is also recommended that you avoid using OpenJDK6. It is understandable that installing it is more easy and convenient, however you will have definitely problems while building your package with

mvn package
command (if not while generating your Maven skeleton).

If you have hit the problem and scrolled to the info section, it claims that you have not set your JAVA_HOME environment variable correctly. What you just need to do is to download the Official JDK6, then extract it to any folder you like and point $JAVA_HOME environment variable to that.

It will work just fine after that!