Chapter 4. Installing Prerequisite Components

Procedure 4.1. Install Open JDK on Red Hat Enterprise Linux

1. Subscribe to the Base Channel

   Obtain the OpenJDK from the RHN base channel. (Your installation of Red Hat Enterprise Linux is subscribed to this channel by default.)

2. Install the Package

   Use the yum utility to install OpenJDK: yum install java-1.7.0-openjdk-devel

3. Verify that OpenJDK is Now Your System Default

   You can ensure the correct JDK is set as the system default by following the steps below.
   1. As root, run the alternatives command for java:

      /usr/sbin/alternatives --config java

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   2. Select /usr/lib/jvm/jre-1.7.0-openjdk/bin/java.
   3. Then do the same for javac:

      /usr/sbin/alternatives --config javac

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   4. Select /usr/lib/jvm/java-1.7.0-openjdk/bin/javac.