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Chapter 2. Installing Prerequisite Components

2.1. Install Open JDK on Red Hat Enterprise Linux
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  1. Install the OpenJDK package: 
    yum install java-[VERSION]-openjdk-devel
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  2. To install it to alternatives, run these commands: 
    sudo alternatives --install /usr/bin/java java usr/lib/jvm/java-[VERSION]-openjdk/bin/java 1000
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    sudo alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-[VERSION]-openjdk/bin/javac 1000
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  3. As root, run the alternatives command for java: 
    /usr/sbin/alternatives --config java
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  4. Select /usr/lib/jvm/jre-[VERSION]-openjdk/bin/java.
  5. Then do the same for javac: 
    /usr/sbin/alternatives --config javac
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  6. Select /usr/lib/jvm/java-[VERSION]-openjdk/bin/javac.
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