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Let's consider we have a freshly commissioned Red Hat Enterprise Linux 8 machine and we'd like to use it for running Java applications. If you prefer to watch a short 4 minute demo video, here it is:

Yes, with JDK 11 you can directly run Java source files. $ /usr/lib/jvm/java-11-openjdk/bin/java HelloWorld.java Then run Java “Hello World” as follows: $ cat > HelloWorld.java HelloWorld.java <Red Hat Enterprise Linux (RHEL) 8, two major versions of Java will be supported: Java 8 and Java 11.