When you are in Ubuntu open the file manager and go to your Download folder. That is where the all.sh script should be when you downloads it. Then in any white space in the file manager right click and select open terminal. This will open a terminal with you already in the Downloads directory. You can also right click on the Downloads folder icon and select open terminal and it will do the same thing. Anyway once you have a terminal open type in this command "sudo ./all.sh" without the quotation marks. Then answer yes when it promts you yes or no and 0 when it asks to choose 0,1, or 2. The 0 installs java the right version of java automatically. You will have to so this twice befor the script is done.