private Person findById(int id) {
for (Person person : storage) {
if (person.getId() == id) {
return person;
}
}
return null;
}
public Set<Person> findByName(String name) {
Set<Person> personByNameSet = new HashSet<Person>();
for (Person person : storage) {
if (person.getName().indexOf(name) != -1) {
personByNameSet.add(person);
}
}
return personByNameSet;
}
public Set<Person> findByAge(int age) {
Set<Person> personByAgeSet = new HashSet<Person>();
for (Person person : storage) {
if (person.getAge() == age) {
personByAgeSet.add(person);
}
}
return personByAgeSet;
}
public boolean exists(int id) {
Person p = new Person();
p.setId(id);
return storage.contains(p);
}
public boolean exists(String name, int age) {
Person p = new Person();
p.setAge(age);
p.setName(name);
return storage.contains(p);
}
public void add(Person person) {
Person copy = new Person(person);
copy.setId(nextId());
System.out.println(">>adding person: " + copy);
this.storage.add(copy);
}