How to install Java jdk in Linux/Ubuntu

Hey there,since i am IT student. We all need to have java in our computer. So, if you using Ubuntu,how to install it? Well, luckily I found a tutorial in YouTube. It is easy. Just make sure you good internet connection. The installation will take more than 5 minutes.

So,first thing first. Open Terminal.

This are the command used. The first 3 steps is for preparing the installation process.
PS:// when you type sudo for first time, it will ask your PC password,just type it slowly. you will understand why.

1. sudo apt-get install python-software-properties
2. sudo add-apt-repository ppa:webupd8team/java
3. sudo apt-get update
4. sudo apt-get install oracle-java7-installer

If you want to understand more,please watch this video. Have a nice day :)