Java FAQ

From Gentoo Linux Wiki

Most of the questions here have been moved the official Java 1.5 FAQ.

Contents 1 Why aren't characters like ä and ö working? 2 Why can't java-config find the 'java_config' module? 3 Emerge'ing of package that use old JVM (1.3 or 1.4) stops because that portage cannot determinate which first-generation JVM to use.

[edit] Why aren't characters like ä and ö working?

To use characters like ä, ö and á in java programs you need to set a locale that supports them. See http://www.gentoo.org/doc/en/guide-localization.xml for more information.

[edit] Why can't java-config find the 'java_config' module?

If you are getting this error:

Traceback (most recent call last):
   File "/usr/bin/java-config", line 14, in ?
     from java_config import jc_options
ImportError: No module named java_config

... Chances are you've updated python recently. To fix the problem, try running:

# python-updater

[edit] Emerge'ing of package that use old JVM (1.3 or 1.4) stops because that portage cannot determinate which first-generation JVM to use.

try to run emerge =java-config-1* encountered during installation of kawa-1.9.1 from custom ebuild, based on kawa-1.8 ebuild.