Java is a programming language and computing platform first released by Sun Microsystems in 1995.
OpenJDK is an open-source implementation of Java.
You can then load a version of of Java using one of the following:
module load Java/11 module load Java/11.0.2
Check that you have the version you expect. First, the runtime
$ java -version openjdk version "11.0.2" 2019-01-15 OpenJDK Runtime Environment 18.9 (build 11.0.2+9) OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode)
Now, the compiler
$ javac -version javac 11.0.2
11: Installed using the unmodified Java-11.eb easyconfig provided with EasyBuild 4.1.0.