This page contains instructions for installing a Java Runtime Environment (JRE). This is a manual step that is only required for Confluence installations where you are installing from a zip or archive file.
If you are using the automated installer, the required Java files are bundled and will be automatically put in place, hence you will not need to follow the instructions on this page.
Please refer to our Supported Platforms topic for details of the Java versions that are supported for Confluence.
Installing the JRE
A JRE (Java Runtime Environment) needs to be installed on the same server machine that will have Confluence installed.
For Windows: (click to expand)
Installing the JRE on Windows
- If you are not sure whether you have a JRE installed, please confirm by doing the following:
- Check Control Panel > Programs and Features in Windows 7 (just Programs on older version of Windows).
- Java should appear as a line item in the list. If not, you do not have Java installed.
- To install the JRE, follow these instructions:
- Go to the Java download page.
- Download the version entitled 'Java SE Update XX (JRE)', where 'XX' stands for some number. (The latest version will be available on that page.)
- When the download has finished, run the Java installer. At one point, you will be asked to choose a directory to install to. Copy or write this directory down for use later.
- Check that the
JAVA_HOME
environment variable has been set correctly.- Open the Start menu, choose Run, type
cmd
in the Run dialog box and click OK. - In the command prompt window, type
echo %JAVA_HOME%
and then press Enter. - View the result:
- If a directory path is displayed that looks similar to one of the following examples, with the letters 'jre' immediately preceding a series of version numbers, and this path matches the location where you installed the JRE in step 2, then your JRE has been successfully installed and your
JAVA_HOME
environment variable has been set correctly.
Examples of typical JAVA_HOME
environment variable values:C:\Program Files\Java\jre6
C:\Progra~1\Java\jre6
C:\Java\jre6
C:\jre6
- If nothing is displayed or you do not see 'jre' immediately followed by a series of version numbers (like one of the examples above), then you need to set the
JAVA_HOME
environment variable. Please follow these instructions to set your JAVA_HOME
environment variable to the directory you where you have just installed the Jre. By default, this directory is under C:\Program Files\Java
.
For Linux: (click to expand)
Installing the JRE on Linux
- If you are not sure whether you have JRE installed correctly, please confirm by doing the following:
- Open a shell console.
- Type
echo $JAVA_HOME
in the shell console and then press Enter - View the result:
- If a line is displayed such as
/opt/jre6
or /usr/lib/jvm/java-6
, then your JRE is installed and properly configured. - If nothing is displayed, then you either need to install the JRE or set the
$JAVA_HOME
environment variable. You can set this environment variable in your user account's 'profile' file. Alternatively, you can set this after installing Confluence (in step 4 below) by defining this path in your Confluence installation's setenv.sh
file, usually located in the Confluence bin
directory. - If you have installed an unsupported JRE and you want to use SSL then you need to install the Sun JSSE package.
- If you need to install the JRE, follow these instructions:
- Go to the Java download page.
- Download the version entitled 'Java SE Update XX (JRE)', where 'XX' stands for some number. (The latest version is available on that page.)
- When the download has finished, run the Java installer. Detailed installation instructions are provided on Oracle's website.