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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 <this article, I’ll refer to Java 8 as JDK (Java Development Kit) 8 since we are focusing on the development aspect of using Java. With Red Hat Enterprise Linux (RHEL) 8, two major versions of Java will be supported: Java 8 and Java 11.