Читать книгу OCP Oracle Certified Professional Java SE 17 Developer Study Guide - Jeanne Boyarsky - Страница 61

Every six months, Oracle releases a new version of Java. Java 17 came out in September 2021. This means that Java 17 will not be the latest version when you download the JDK to study for the exam. However, you should still use Java 17 to study with since this is a Java 17 exam. The rules and behavior can change with later versions of Java. You wouldn't want to get a question wrong because you studied with a different version of Java!

You can download Oracle's JDK on the Oracle website, using the same account you use to register for the exam. There are many JDKs available, the most popular of which, besides Oracle's JDK, is OpenJDK.

Many versions of Java include preview features that are off by default but that you can enable. Preview features are not on the exam. To avoid confusion about when a feature was added to the language, we will say “was officially introduced in” to denote when it was moved out of preview.