how to identify an object by specific attribute

LookingPersonInsideList.java

/**
 * Created by omayib on 01/08/17.
 */
public class YourApps {
    public static void main(String[] args) {
        Person arif = new Person("Arif", 20, 163);
        Person akbarul = new Person("Akbarul", 25, 160);
        Person huda = new Person("Huda", 21, 165);

        //insert the data into customers list.
        List<Person> customers = new ArrayList<Person>();
        customers.add(arif);
        customers.add(akbarul);
        customers.add(huda);

        //i want to search the person who has 25 years old and height 160 cm.
        Person whoIam = new Person("?", 25,160);

        // lets check that list of customers contain person you looking for
        System.out.println(customers.contains(whoIam));
        // where is index position the person you are looking for?
        System.out.println(customers.indexOf(whoIam));
        // who i am?
        int indexOfWhoIam = customers.indexOf(whoIam);
        System.out.println(customers.get(indexOfWhoIam).name);
    }

    static class Person{
        final String name;
        final int age;
        final int height;

        Person(String name, int age, int height) {
            this.name = name;
            this.age = age;
            this.height = height;
        }
        /*
        * The equals and hashcode can be generated by right click your java editor or
        * If you are using Intellij Idea, you can press alt+insert
        * then choose `equals()` and `hashcode()`.
        * please check the attribute which will be a unique identifier.
        * in this case i check `age` and `height`.
        * */
        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            Person person = (Person) o;

            if (age != person.age) return false;
            return height == person.height;
        }

        @Override
        public int hashCode() {
            int result = age;
            result = 31 * result + height;
            return result;
        }
    }
}