Installing Java (Ubuntu 10.04)

1. Enable the Cononical Partner Repository in Synaptic (under "other software") and reload.
2. Download sun-java6-jre, sun-java6-plugin and sun-java6-fonts.
3. Set your system to use the Sun Java JRE and Dev packages as the default by typing into a console:

sudo update-java-alternatives --set java-6-sun

Fixing Java in Opera

If you start Opera from the console you may see the following error message if java doesn't work correctly:

ERROR: ld.so: object 'libjvm.so' from LD_PRELOAD cannot be preloaded: ignored.
ERROR: ld.so: object 'libawt.so' from LD_PRELOAD cannot be preloaded: ignored.

To fix this, correct the Java path under Tools -> Preferences -> Advanced Tab -> Content -> Java options. It should look similar to this:

/usr/lib/jvm/java-1.5.0-sun-1.5.0.06/jre/lib/i386/

Check your installed Java pathways and change accordingly.

Install Flash and Java Plugins - 32 Bit

To get Flash and Java working, either download flashplugin-nonfree, sun-java6-jre and sun-java-plugin through Synaptic and then restert Firefox.

Or:

sudo apt-get install flashplugin-nonfree

sudo apt-get install sun-java6-jre sun-java6-plugin

If you need to choose between older Java installations, then type:

sudo update-alternatives --config java

...and follow the onscreen prompt.