Gajdusek cleaning

docs.it4i/software/java.md

+# Java
+
+Java is available on the cluster. Activate java by loading the Java module
+
+```console
+$ ml Java
+```
+
+Note that the Java module must be loaded on the compute nodes as well, in order to run java on compute nodes.
+
+Check for java version and path
+
+```console
+$ java -version
+$ which java
+```
+
+With the module loaded, not only the runtime environment (JRE), but also the development environment (JDK) with the compiler is available.
+
+```console
+$ javac -version
+$ which javac
+```
+
+Java applications may use MPI for inter-process communication, in conjunction with Open MPI. Read more on <http://www.open-mpi.org/faq/?category=java>. This functionality is currently not supported on Anselm cluster. In case you require the java interface to MPI, please contact [cluster support](https://support.it4i.cz/rt/).