I can’t add much to this JDJ article on the speed of Java other than… Amen. Many people have this misconception that Java is slow, but that simply is not true in one of Java’s best environments: web applications. The article explains this in more detail, but long story short, the JVM is a very sophisticated piece of software that implements Just In Time compiling which results in execution times that are as fast, and often times faster, than on other platforms, including C/C++. The excellence of the JVM is one of the many reasons that we believe Groovy on Grails is going to be one of the leading players in the future of web development.