Is initializing field variables in an empty constructor better than initializing at declaration?

Issue

For example: Which is better practice? If there is any difference at all.

class IceCream {
    String flavour = "vanilla";

    public IceCream() {
        
    }
}

or

class IceCream {
    String flavour;

    public IceCream() {
        flavour = "vanilla";
    }
}

Solution

Technically no difference - you just need to remember that field initialization is happening before calling constructor(s) and processing init blocks

Privately I prefer the field approach because you do not need to add boiler plate code and see the initial value next to the declaration just after entering the class.

Of course remember that not always you are able to use inline initialization

• https://docs.oracle.com/javase/tutorial/java/javaOO/initial.html

Answered By - m.antkowicz