ЯсноПонятно24

import java.util.Arrays;

public class Animal implements Comparable<Animal> {
    private String species;
    private String eyeColor;
    private boolean hasFur;

    public Animal(AnimalBuilder builder) {
        this.species = builder.species;
        this.eyeColor = builder.eyeColor;
        this.hasFur = builder.hasFur;
    }

    public String getSpecies() {
        return species;
    }

    public String getEyeColor() {
        return eyeColor;
    }

    public boolean hasFur() {
        return hasFur;
    }

    @Override
    public int compareTo(Animal o) {
        if (!this.species.equals(o.species)) {
            return this.species.compareTo(o.species);
        } else if (!this.eyeColor.equals(o.eyeColor)) {
            return this.eyeColor.compareTo(o.eyeColor);
        } else {
            return Boolean.compare(this.hasFur, o.hasFur);
        }
    }

    @Override
    public String toString() {
        return "Animal{" +
                "species='" + species + '\'' +
                ", eyeColor='" + eyeColor + '\'' +
                ", hasFur=" + hasFur +
                '}';
    }

    public static class AnimalBuilder {
        private String species;
        private String eyeColor;
        private boolean hasFur;

        public AnimalBuilder(String species) {
            this.species = species;
        }

        public AnimalBuilder withEyeColor(String eyeColor) {
            this.eyeColor = eyeColor;
            return this;
        }

        public AnimalBuilder withFur(boolean hasFur) {
            this.hasFur = hasFur;
            return this;
        }

        public Animal build() {
            return new Animal(this);
        }
    }

    public static void main(String[] args) {
        Animal lion = new Animal.AnimalBuilder("Lion")
                .withEyeColor("Yellow")
                .withFur(true)
                .build();

        Animal tiger = new Animal.AnimalBuilder("Tiger")
                .withEyeColor("Blue")
                .withFur(true)
                .build();

        Animal wolf = new Animal.AnimalBuilder("Wolf")
                .withEyeColor("Brown")
                .withFur(true)
                .build();

        Animal[] animals = {lion, tiger, wolf};
        Arrays.sort(animals);

        for (Animal animal : animals) {
            System.out.println(animal);
        }
    }
}