Then run Java “Hello World” as follows: $ cat > HelloWorld.java HelloWorld.java < $ sudo yum install java-1.8.0-openjdk-devel To install JDK 8, use: (If you didn't select Make this user administrator during install see this article to enable sudo on RHEL) Through this article, you’ll learn how to install and run simple Java applications on RHEL 8, how to switch between two parallel installed major JDK versions via alternatives and how to select one of the two JDKs on a per-application basis. JDK 8 and JDK 11 refer to Red Hat builds of OpenJDK 8 and OpenJDK 11 respectively. In 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.
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