I've had complaints when 'java disappeared' after an update actually an update removed the 'obsolete' version. A java update will create a new 'patch' level directory and eventually remove the older patch level java. Keep in mind you don't want to point to the directory which is identified at the full patch level but at a more generic release level. JAVA_HOME should point to a directory which contains a bin directory containing the java executable. 'The echo $JAVA_HOME command-line must return the complete path directory to java executable.'

The echo $JAVA_HOME command-line must return the complete path directory to java executable.įor detailed instructions, please see JBOSS Enterprise Application Platform Installation Guide: Install OpenJDK on Red Hat Enterprise Linuxįor usage of alternatives command-line tool, see solution Switching JAVA_HOME using alternatives.Save the file and reload the shell configuration, i.e, source ~/.bashrc.At the bottom of the file, type the following line, replacing the hypothetical path with the actual path to use on the operating system: export JAVA_HOME='/path/to/java/home'.For the bash shell, this file is /home/username/.bashrc. As the user who will use OpenJDK or any JDK vendor, open the shell configuration file.It should point to the directory containing a bin/java executable. Determine the correct value for JAVA_HOME.To manually set up the JAVA_HOME environment variable follow the steps: Generally JAVA_HOME is needed to run the Java-related applications, else the results may vary. How do I set the JAVA_HOME environment variable?.To run JBoss product, I need to set the JAVA_HOME environment variable, how to set it?.

Set java home ubuntu