class DBQuery
{
    private java.sql.Connection conn;

    DBQuery()
    {
        java.util.Properties info = new java.util.Properties();

        try( java.io.InputStream in =  this.getClass().getResourceAsStream("myDB.properties") )
        {
            if( in != null )
            {
                info.load(in);
                this.conn = java.sql.DriverManager.getConnection(info.getProperty("url"), info.getProperty("user"), info.getProperty("password"));
                System.out.println("Connected to " + info.getProperty("url")+ " as User '"+info.getProperty("user")+"'!");
            }
        }
        catch( java.io.IOException | java.sql.SQLException e1)
        {
            System.err.println("Could not properly connect to Database!");
            System.err.println(e1);

            //safety!
            try
            {
                if( this.conn != null ) this.conn.close();
            }
            catch( java.sql.SQLException e2 )
            {
                System.err.println("Closing connection failed!");
                System.err.println(e2);
            }
            finally { System.exit(1); }
        }
    }
}