Make your Mysql friendly to Emoji character

In my last projects, Mysql is usually UTF-8 as the core encoding. However, it is not good for my current project now because we will play with Emoji Character;

Emoji Character is using an extended utf-8 Encoding, called UTF-8 mb4 (utf8mb4).

If inserting string with Emoji Character, the mysql will alert "incorrect string" and make the SQL fail.
To fix this, we need to:

• Change the database and table to utf8mb4 encoding 
• Change the connection encoding to utf8mb4 as well

External Reference:

• http://mathiasbynens.be/notes/mysql-utf8mb4
• http://info.michael-simons.eu/2013/01/21/java-mysql-and-multi-byte-utf-8-support/
• http://my.oschina.net/wingyiu/blog/153357