How to Install the Java Software Development Kit. Before you can create and modify Java programs, youll need the Java Software Development Kit. You can. Here you will learn some basics stuff related to Java e. Java and setting enviornment variable. JRE 1. 7 returns javalangNo. Class. Def. Found. Error javalangObject. Quick Solution for impatient people On Windows machines, try this. Go to C WindowsSystem. Since at least 1. Windows directory. If there is, its a leftover from something. A bit more reading Im really suprised that a question from 2. Ive actually encountered the same issue in 2. Instalar un entorno JRE de Java. Eclipse es un programa que est escrito en Java. Luego para poder ejecutarlo necesitamos instalar en nuestro Windows el JRE Java. Win 7 3. 2 Bit OS So what did happen Basically, everything was working fine, I downloaded H2 database and when I tried to start H2 Console Command Line I got Error occurred during initialization of VM. No. Class. Def. Found. Error javalangObject. I found this question and I was able to confirm the same symptoms JAVAHOME is set correctly echo JAVAHOME. C Program FilesJavajdk. Java Jdk1.6.0 31' title='Java Jdk1.6.0 31' />Go to C WindowsSystem. I actually renamed java. Constant Springs Sims 3. Now, I get java version. JavaTM SE Runtime Environment build 1. Java Hot. SpotTM Client VM build 2. H2 Console Command Line works fine as well Credits go to the last post in this forum.