ubuntu 12.04 安装sun-jdk-6

UPDATE: [07-Aug-2012] Thanks to a comment from  this seems to be the best method (uses the latest version of the Flexion script from Github rather than the version referenced above)

sudo apt-get purge sun-java* #You need to do that if you want the mozilla plugin to work without conflict with java7 for instance.
mkdir ~/src
cd ~/src
git clone
cd ~/src/oab-java6
sudo ./oab-java.sh

Then when its finished, install java:
sudo apt-get install sun-java6-plugin sun-java6-jre sun-java6-bin sun-java6-jdk

You can follow the installation process with:
tail -f ~/src/oab-java6/oab-java.sh.log

===================================================================

apt-get purge openjdk*

apt-add-repository ppa:flexiondotorg/java

apt-get update

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

=============================================================
手动安装：
1, 根据自己机器的类型下载对应的安装包

2， mkdir /usr/lib/jvm/java
3， copy installed file jdk-6u43-linux-x64.bin to /usr/lib/jvm/java and chmod to executable
4， cd /usr/lib/jvm/java
      ./jdk-6u43-linux-x64.bin
5， add below to the end of /etc/profile

#set java environment

export JAVA_HOME=/usr/lib/jvm/java/jdk1.6.0_43

export JRE_HOME=/usr/lib/jvm/java/jdk1.6.0_43/jre

export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH