Main.java

/* ----------------------------------------------------------
   СМЕНИТЬ НА СВОЙ!
   ----------------------------------------------------------  */
package ru.gordinmitya;

import java.util.Arrays;

class Animal {
    String name;
    void say() { }
}

class Dog extends Animal {

}

class Cat extends Animal {

}


class Book extends Object implements Comparable<Book> {
    String authorSurname;
    String authorName;
    String name;
    int pageCount;
    String year;

    public Book(String authorSurname, String authorName, String name, int pageCount, String year) {
        this.authorSurname = authorSurname;
        this.authorName = authorName;
        this.name = name;
        this.pageCount = pageCount;
        this.year = year;
    }

    String getInfo() {
        return String.format("%s %s; %s (%s)", authorName, authorSurname, name, year);
    }

    @Override
    public String toString() {
        return getInfo();
    }

    @Override
    public int compareTo(Book o) {
        if (this.pageCount > o.pageCount) {
            return 1;
        } else if (this.pageCount == o.pageCount) {
            return 0;
        } else {
            return -1;
        }
    }
}

public class Main {
    static void printAll(String title, Object[] array) {
        System.out.println(title);
        for (Object o : array) {
            System.out.println(o);
        }
    }

    public static void main(String[] args) {
        Book[] books = new Book[]{
                new Book("Достоевский", "Федор", "Бесы", 578, "1887"),
                new Book("Достоевский", "Федор", "Униженные и оскорбленные", 300, "1887"),
                new Book("Братья", "Стругацких", "Улитка на склоне", 400, "1887")
        };

        printAll("Initial", books);

        Arrays.sort(books);

        printAll("Sorted", books);
    }
}