Install Java in Ubuntu (VirtualBox)

Start your VirtualBox Ubuntu guest and log in. Open firefox and download the latest JavaSE JDK from http://java.sun.com and install as follows:

• From http://java.sun.com click on downloads->JavaSE and select the latest jdk (JDK6-update10)


• Select the linux -> multi-language and download the .bin file


• The file will download onto your desktop


• Open a terminal session (Applications->Accessories->Terminal) and enter cd Desktop


• move the downloaded file to your destination directory (e.g /opt)
  sudo mv jdk-6u10-linux-i586.bin /opt


• cd /opt


• sudo chmod 700 jdk-6u10-linux-i586.bin


• sudo ./jdk-6u10-linux-i586.bin


• type yes to accept the license agreement and install java with all the defaults.
  

Now we need to modify our system variables to know where Java is. There are a number of ways to do this - one option is as follows:

• sudo vi /etc/profile


• add the following entries to the end of the /etc/profile file:
  

  
  export JAVA_HOME=/usr/jdk1.6.0_10
  export PATH=$JAVA_HOME/bin:$PATH
  

  
  

Now reboot your server.