Question: How do I start my function every 5 minutes and 20 seconds? I used: 

```
self.timer = QtCore.QTimer(self)
self.timer.timeout.connect(self.updateplot)
self.timer.start(310000)

```

But I'd like to set it by the time of my PC - so if I start the program at 3:23, the update track is at 3:25:20, 3:30:20 etc.

Answer: 
you can use reflection.

```
Dog dog = new Dog("val1", "val2", "val3");
            List<String> list = new ArrayList<>();
            for(Field field: Dog.class.getDeclaredFields()) {
                // since fields are private we need to first mark it accesible
                field.setAccessible(true);
                if( field.getType().equals(String.class)) {
                        list.add((String) field.get(dog));
                }
            }

```
Using reflection you can give a try to `get` the value of the fields of object:

```
Dog dog = new Dog("labrador","tarzan","uk"); // sample
List<String> values = Arrays.stream(Dog.class.getDeclaredFields())
        .filter(f ->f.getType().equals(String.class))
        .map(f -> {
  try {
    return (String) f.get(dog); // get the value of field from the object
  } catch (IllegalAccessException e) { 
    return ""; /// handle in a cleaner way
  }
}).collect(Collectors.toList());

```