1 - Import the "exams_lite.sql" into your database.
2 - Put the database access information in the "src/Data/db_config.java" file as the following:
private static final String url_database = "the databse link like (jdbc:mysql://localhost:8889/exams_lite)";
private static final String user="(enter the user name)";
private static final String pass="(enter the password) ";