java jdk 11 download code example

Example: java jdk 11

Download:
	https://www.oracle.com/java/technologies/javase-jdk11-downloads.html
	https://adoptopenjdk.net/?variant=openjdk11
Java Language Specification:
	https://docs.oracle.com/javase/specs/jls/se11/html/index.html
API Docs:
	https://docs.oracle.com/en/java/javase/11/docs/api/index.html