• Slides presenting new JDK features (only in Portuguese)

• JDK   8 Examples. For functional programming examples, check this repo (only in Portuguese).

• JDK   9 Examples

• JDK 10 Examples

• JDK 11 Examples

• JDK 12 Examples

• JDK 13 Examples

• JDK 14 Examples

• JDK 15 Examples

• JDK 16 Examples

• JDK 17 Examples

• JDK 18 Examples

• JDK 19 Examples

• JDK 22 Examples

Since JDK 13, the oficial Java language documentation site has improved a lot, providing specific articles for each new feature. You can check the documentation at https://docs.oracle.com/en/java/javase/13/language/index.html, where you can replace 13 by the JDK version you wish.