Installing Ubuntu using VirtualBox on MacOSX

It is a how-to document to install Ubuntu linux on the Mac OS X using Oracle's VirtualBox.
If you manage some operating systems, you should clean up how-to the document.

Prerequisites :
  - Mac OS X 10.7.3 (Mac bundle)
  - Oracle VirtualBox 4.1.12 ( https://www.virtualbox.org/wiki/Downloads )
  - Ubuntu desktop i386 11.10 ISO file ( http://www.ubuntu.com/download/ubuntu/download )

1. Running VirtualBox than make new virtual machine and insert Ubuntu desktop i386 ISO file to DVD(CD)-ROM.

2. Starting the virtual machine which you made, so Ubuntu is run to install.
 
3. (Optional) If you have a japanese keyboard, you should set Japanese-Japanese on the keyboard layout window.

4. Updating Ubuntu software after installing Ubuntu is ended.

5. Set applications as the Terminal application in the left panel.

Mac OS X + Eclipse + Java

I tried to organize information about how to install eclipse on the mac.

It's very simple, but I'll continue to organize.

1. Running the Terminal.app. Then to check a version. (Version higher then 1.6)

2. Running the Safari.app. Then to access an Eclipse website. (http://www.eclipse.org/)

3. Downloading the latest Eclipse. (Eclipse IDE for Java Developers, 32bit)

4. Moving download file to desktop area.

5. Double-Click to restore an archive file.

6. Verifying an eclipse directory which was completed restoring.

7. Moving an eclipse directory to Application area.

8. Copying a Eclipse.app to dock area for easy running.

9. Running an eclipse.

10. Verifying an eclipse display.

11. Setting an eclipse preferences.