Erreur Pampalasa BDD

Grave: java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/pampalasa
    at java.sql.DriverManager.getConnection(DriverManager.java:604)
    at java.sql.DriverManager.getConnection(DriverManager.java:221)
    at com.pampalasa.dao.ConnectionMySQL.getInstance(ConnectionMySQL.java:17)
    at com.pampalasa.dao.DAO.<init>(DAO.java:8)
    at com.pampalasa.dao.ArticleDAO.<init>(ArticleDAO.java:9)
    at com.pampalasa.dao.DAOFactory.getArticleDAO(DAOFactory.java:10)
    at com.pampalasa.controller.GestionArticleServlet.init(GestionArticleServlet.java:32)

Grave: java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/pampalasa
    at java.sql.DriverManager.getConnection(DriverManager.java:604)
    at java.sql.DriverManager.getConnection(DriverManager.java:221)
    at com.pampalasa.dao.ConnectionMySQL.getInstance(ConnectionMySQL.java:17)
    at com.pampalasa.dao.DAO.<init>(DAO.java:8)
    at com.pampalasa.dao.ArticleDAO.<init>(ArticleDAO.java:9)
    at com.pampalasa.dao.DAOFactory.getArticleDAO(DAOFactory.java:10)
    at com.pampalasa.controller.GestionArticleServlet.init(GestionArticleServlet.java:32)
    at com.pampalasa.controller.GestionArticleServlet.doGet(GestionArticleServlet.java:42)

Avertissement: StandardWrapperValve[GestionArticleServlet]: PWC1406: Servlet.service() for servlet GestionArticleServlet threw exception
java.lang.NullPointerException
    at com.pampalasa.dao.ArticleDAO.find(ArticleDAO.java:44)
    at com.pampalasa.controller.GestionArticleServlet.doGet(GestionArticleServlet.java:43)