Question

Consider you have an inheritance hierarchy representing a Food class and a Pizza class. Reviewing the constructors of the Pizza class below, using your own words, explain why an error will be generated (1-2 sentences).

public Pizza() {
super();
++numPizzas;
}

public Pizza(String numCalories, String size, boolean hasPepperoni) {
this();
super(numCalories);
this.size = size;
this.hasPepperoni = hasPepperoni;
}

Answer 1

First statement in the constructor should be a super()
So, swap first two lines of code in second constructor of Pizza class.
and there is no need of call this()
FIX:
public Pizza(String numCalories, String size, boolean hasPepperoni) {
super(numCalories);
this.size = size;
this.hasPepperoni = hasPepperoni;
}