To celebrate Java’s 25th anniversary this year, JetBrains has compiled data from multiple sources to look at what the current state of the language is.

JetBrains is shipping version 9 of its IntelliJ Idea IDE for Java, this time offering both commercial and open source versions.

The Java 101 series provides a self-guided introduction to Java programming, starting with the basics and covering all the core concepts you need to know to become a productive Java developer.