OpenJDK may lead to unexpected behavior and is not officially supported.
It is recommended to use the bundled Oracle Java Runtime Environment. Users can extend the IDE by installing plugins created for the IntelliJ Platform. It will thus run on all major operating systems that support Java.
It is built on JetBrains' IntelliJ IDEA platform, which is written in Java. JetBrains PhpStorm is a commercial, cross-platform IDE for PHP.
