jdbc-con

#this the DBConnection.java

public class DBConnection {
    private  String driver = "com.myql.jdbc.Driver";
    private  String url = "jdbc:mysql://localhost/invensales";
    private  String userdb = "root";
    private  String passdb = "root";
    private Connection con;

    public void connect(){
        try {
            Class.forName(driver);
            con = DriverManager.getConnection(url, userdb, passdb);
        }
        catch (ClassNotFoundException | SQLException err) {
            err.printStackTrace();
        }
    }

}

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I create Login.java

    private void loginActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
    }