How to Install Java Compiler / javac in Ubuntu

This will show you how to install the java compiler in Ubuntu

• Open the Terminal
• Type in  sudo apt-get install openjdk-7-jdk
• You will be asked for authorization and confirmation of the download and once finished you can start using the compiler

Now in case you get this message  E: unable to locate package openjdk-7-jdk

• Type in  sudo apt-get update to update the packages
• Then type in sudo apt-get install openjdk-7-jdk once more and that should do the trick