Before installing Java, please take a look at this page for any existing issues.

Sun JDK Issues

For Jira we recommend that you use the latest version of Java. Below are the issues that we have found with earlier versions:

JDK 1.4

Jira Standalone releases 3.3 and later includes Apache Tomcat 5.5.9. This release of Tomcat is intended for use with JDK 1.5. In order to use JDK 1.4 you will need to download the "jakarta-tomcat-5.5.9-compat" package from the Apache website.

If you are using FreeBSD, you'll need JDK 1.4.2-p5 or above.

JDK 1.5

Due to a JVM bug, we recommend that you do not use JDK 1.5.0_06_b05 or JDK 1.5.0_05 (see JRA-9198 for further details). If you are using one of these versions, please upgrade to a later version.
Older JIRA releases (JIRA 3.1.1 and earlier) do not work 100% with JDK 1.5 due to a JDK bug that affects filter subscriptions. The problem has been worked around in JIRA 3.2 and above.

Older JDK releases

Jira Standalone releases for Jira 3.3 and later no longer support JDK 1.3.

その他の課題

開発

To build JIRA from source, you will need JDK 1.4 or above

Linux users

On recent X.org-based distros (eg. FC4+) to avoid getting errors like the following, you will need to install the xorg-x11-deprecated-libs package (Fedora) or equivalent (check Google).
java.lang.UnsatisfiedLinkError: /opt/j2sdk1.4.2_11/jre/lib/i386/libawt.so: libXp.so.6: cannot open shared object file: No such file or directory