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Chapter 4. Installing Prerequisite Components

4.1. Install Open JDK on Red Hat Enterprise Linux

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