var2

public class Cat {

    private String name;
    private int satiety; // сытость
    private boolean isAlive; // живой?

    public Cat(String name) {
        this.name = name;
        this.satiety = 100;
        this.isAlive = true;
    }

    public void liveDay() {
        this.satiety -= 50;
        if (this.satiety <= 0) {
            isAlive = false;
        }
    }

    public void feed(Feed feed) {
        if (isAlive) {
            this.satiety += feed.satietyOfGramm * feed.portion;
        } else {
            System.out.println("Кот помер");
        }
    }

    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

public class Feed {

    int portion;
    int satietyOfGramm;

    public Feed(int portion, int satietyOfGramm) {
        this.portion = portion;
        this.satietyOfGramm = satietyOfGramm;
    }

    public int getPortion() {
        return portion;
    }

    public void setPortion(int portion) {
        this.portion = portion;
    }

    public int getSatietyOfGramm() {
        return satietyOfGramm;
    }

    public void setSatietyOfGramm(int satietyOfGramm) {
        this.satietyOfGramm = satietyOfGramm;
    }
}