1. Install in the Operational System or download the version of Java required by Xporter (JAVA 11);
2. Keep the path of the Java home folder noted, to be used later (step 4); 
3. Stop JIRA;

4. Set the path where you installed Java as the JAVA_HOME (JDK) or JRE_HOME (JRE) variables for JIRA (see instructions below);

Note: If JRE_HOME is not defined, Jira will define its value using the JAVA_HOME value.

• Go to the path where you installed Jira, then open the bin folder;

• Edit the setenv.bat file, including the below just under the @echo off line;

If the JAVA installed is JRE:

SET JRE_HOME="\path\to\new\jre\home"

If the JAVA installed is JDK:

SET JAVA_HOME="\path\to\new\jdk\home"

• Set PATH  to include the <Java>\bin folder;

SET PATH="\path\to\new\jdk\bin or jre\bin;%PATH%" 

• Restart JIRA;

• Stop the JIRA service;

• Run the below command on a Command Prompt as an Administrator, inside the bin folder of JIRA's Installation Directory;

  tomcat8w.exe //ES//JIRA050815072407 

  This command is dependent on the version of Tomcat your instance is using. Check the executable present in <JIRA Install Directory>/bin/

  You can get the service name by going to your Windows services and copying the service name for the "Atlassian JIRA" service. For example, 'JIRA050815072407' in this case.

• On the Java tab, choose the location of the jvm.dll file from the JDK/JRE installation directory you want to use;
• Start the JIRA service;

For Linux/Unix based operational system, using manual start:

• Go to the location where you installed JIRA, then to the bin folder;

• Edit the setenv.sh file and add the lines at top of the file:

If the JAVA installed is JRE:

JRE_HOME="/path/to/new/jre/home"

If the JAVA installed is JDK:

JAVA_HOME="/path/to/new/jdk/home"

•  For instance: JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk1.8.0_241.jdk/Contents/Home"

• Set PATH  to include the <Java>/bin folder

PATH="/path/to/new/jdk or jre/bin:$PATH"

• Restart JIRA