gistfile1.txt

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.stream.IntStream;

/**
 * There is a Cat class with a String variable name, int variable age.
 *
 * Create a Map<Integer, Cat> and add 10 cats represented by (index, Cat) pairs.
 *
 * Get a Set of all cats from the Map and display it on the screen.
 *
 * Requirements
 * •The program must not read data from the keyboard.
 * •The createMap method must create a new HashMap<Integer, Cat> object.
 * •The createMap method must add 10 cats to the map, represented by (index, Cat) pairs.
 * •The createMap method must return the created map.
 * •The convertMapToSet method must create and return the set of cats retrieved from the passed map.
 * •The program must display name and age each cats in the set.
 */

public class Task2 {
    public static void main(String[] args) {
        Task2 task = new Task2();
        Map<Integer, Cat> maps = task.createMap();
        Set<Cat> catSets = task.convertMapToSet(maps);
        task.printCats(catSets);

    }

    public Map<Integer,Cat> createMap() {
        Map<Integer, Cat> mapCats = new HashMap<>();
        IntStream.rangeClosed(1, 10).forEach(e -> {
            String name = "cat " + e;
            Cat cat = new Cat(name, e);
            mapCats.put(e, cat);
        });;  
        return mapCats;
    }

    public Set<Cat> convertMapToSet(Map<Integer, Cat> map){
        return new HashSet<>(map.values());
    }

    public void printCats(Set<Cat> cats) {
        cats.forEach(System.out::println);
    }

    public class Cat{
        private String name;
        private int age;
        
        public Cat(String name, int age) {
            this.name = name;
            this.age = age;
        }

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

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

        public int getAge() {
            return this.age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        @Override
        public String toString() {
            return "{" +
                " name='" + getName() + "'" +
                ", age='" + getAge() + "'" +
                "}";
        }


        @Override
        public boolean equals(Object o) {
            if (o == this)
                return true;
            if (!(o instanceof Cat)) {
                return false;
            }
            Cat cat = (Cat) o;
            return Objects.equals(name, cat.name) && age == cat.age;
        }

        @Override
        public int hashCode() {
            return Objects.hash(name, age);
        }


    }
}