private Connection connection;
private Statement statement;
private ResultSet result;

public DBConnect(){
    try {
        Class.forName("com.mysql.jdbc.Driver");
        connection = DriverManager.getConnection("jdbc:mysql://localhost:1234/practicedb"); //code stucks here and after some minutes it is throwing an exception
        System.out.println("Connected");//this is never executed.
        statement = connection.createStatement();

    } catch (Exception ex) {
        System.out.print("Error in Constractor: "+ex);
    }
}

public void getData() {

    try {

        String query = "select * from cars";

        result = statement.executeQuery(query);
        while (result.next()) {
            String name = result.getString("carName");
            String id = result.getString("carID");
            String modelNum = result.getString("modelNumber");
            System.out.println("Car name: " + name + ", " + "Car ID: " + id + ", " + "Car model number: " + modelNum);
        }

    } catch (Exception ex) {
        System.out.println(ex);
    }

}