Malcom:Ubuntu:Java
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Ubuntu Java
Common Packages
sudo apt-get install fakeroot java-package java-common
Java Install
There are a couple of ways to install Java, but I find the best is to simply download the .bin from Sun directly and perform the following two commands:
fakeroot make-jpkg jdk-1_5_0_06-linux-i586.bin sudo dpkg -i sun-j2sdk1.5_1.5.0+update06_i386.deb
Substituting the correct file name for the .bin file and corresponding .deb file.
Default Java
Use update-alternatives to change the /usr/bin/java to the correct java version.
sudo update-alternatives --config java
- From the man page for update-alternatives:
"update-alternatives creates, removes, maintains and displays information about the symbolic links comprising the Debian alternatives system."
JAVA_HOME
It's a good idea to set the environment variable JAVA_HOME in either your .bashrc or .bash_profile:
export JAVA_HOME='/usr/lib/j2sdk1.5-sun'
Another approach is to make a symbolic link say at /usr/local/java or /usr/lib/j2sdk that points the version of Java that's your default, and then point JAVA_HOME to that symbolic link. That way, you just have to switch the symobolic link and you don't have to muck around with the JAVA_HOME variable.
ANT
sudo apt-get install ant ant-doc
Java Plugin
- First test your browser with Sun's testvm
If there's nothing there or the one you want isn't; then you can do something like this:
cd /home/username/.mozilla/plugins ln -s /usr/lib/j2re1.5-sun/plugin/i386/ns7/libjavaplugin_oji.so libjavaplugin_oji.so sudo ln -s /usr/lib/j2re1.5-sun/plugin/i386/ns7/libjavaplugin_oji.so /usr/lib/mozilla-firefox/plugins/
