SYSTEM LOGIN "JAVA - MySQL"

In the current era of a data security is needed. The data is not merely a collection of files stored in the computer, but the data is not excessive when is the life cycle of human life. For example in the banking system, savings data is critical to guarded kemanannya.
One way to maintain the security of our data is logged in the system, where if the user would enter the system the user must enter a username and password first, and to better maintain, more powerful data is even better if we Encrypt data before the data stored in the database.
In a simple system which we will make this time, we use SQL with MySQL that will be connected with our java program. Because in Java itself has menyediaka libraries for MySQL. Below is a code to connect Java and MySQL: