Java EE

Java EE builds upon Java SE; therefore, it requires that Java SE is installed. It adds lots of APIs in a lot of categories. Java EE applications usually run inside JVM application servers. This book does not cover Java EE in depth but will mention it from time to time. This is because it is a very important addition to the Java platform, especially for business developers.

It is not possible to download a Java EE standalone edition from the Oracle website; instead, you will have to download a full application server that is compatible with the Java EE platform version you want to use. Some IDEs bundle the Java EE application server as well; we will cover this in the next chapter.

The Java EE standard only describes the APIs that must be available, but it does not dictate the implementation. It's up to the Java EE-compatible application servers to come up with actual implementations that adhere to these standards.