java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver
/*
It seems the mysql connectivity library is not included in the project. Solve the problem following one of the proposed solutions:
MAVEN PROJECTS SOLUTION
Add the mysql-connector dependency to the pom.xml project file:
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
Here you are all the versions: https://mvnrepository.com/artifact/mysql/mysql-connector-java
ALL PROJECTS SOLUTION
Add the jar library manually to the project.
Right Click the project -- > build path -- > configure build path
In Libraries Tab press Add External Jar and Select your jar.
You can find zip for mysql-connector here (http://dev.mysql.com/downloads/connector/j/5.0.html)
*/