repository

package repository;

import java.util.LinkedHashMap;

public class Repository {
    private int id;
    private LinkedHashMap<Integer, Person> data;

    public Repository() {
        this.data = new LinkedHashMap<>();
        this.id = 0;
    }


    public void add(Person person) {
        data.put(id, person);
        id++;
    }

    public Person get(int id) {
        return this.data.get(id);
    }

    public boolean update(int id, Person newPerson) {
        if (data.containsKey(id)) {
            data.put(id, newPerson);
            return true;
        }
        return false;
    }

    public boolean delete(int id) {
        if (data.containsKey(id)) {
            data.remove(id);
            return true;
        }
        return false;
    }

    public int getCount() {
        return data.size();
    }
}