The Java JDK (Java Development Kit) is a software development environment that creates Java applications.

Oracle JDK 8 and Oracle Java SE Embedded 8 are now available to download. Java SE 8 and Java ME 8 are on a strong convergence path, with Java ME 8 scheduled for availability later this spring.

Oracle has extended public updates for Java Development Kit (JDK) 8 until at least January 2019. These had been slated to end in September 2018.

If you want to download and install Java JDK 18 on Windows 11/10 computer, you will also have to set up a Path in Environment Variable.

As I was thinking about the remaining differences between Java interfaces and abstract classes in a JDK 8 world, I decided to see what the Java Tutorial had to say on this.