Trio

import java.util.*;

public class Trio<T> {
    private T item1, item2, item3;

    public Trio(T newItem1, T newItem2, T newItem3){
        this.item1 = newItem1;
        this.item2 = newItem2;
        this.item3 = newItem3;
    }

    public Trio(T newItem){
        this(newItem,newItem,newItem);
    }

    public void setItem1(T newItem){
        this.item1 = newItem;
    }

    public void setItem2(T newItem){
        this.item2 = newItem;
    }

    public void setItem3(T newItem){
        this.item3 = newItem;
    }

    public T getItem1 (){
        return item1;
    }

    public T getItem2 (){
        return item2;
    }

    public T getItem3 (){
        return item3;
    }


    @Override
    public String toString() {
        return item1.toString() + "\t" + item2.toString() + "\t" + item3.toString();
    }

    /* public int contains(Object item){
        int count = 0;
        if (item.equals(item1)){
            count++;
        }
        if (item.equals(item2)){
            count++;
        }
        if (item.equals(item3)){
            count++;
        }
        return count;
    } */

    public int contains(Object item) {
        int count = 0;
        ArrayList<T> itemArray = new ArrayList<>();
        itemArray.add(0, this.item1);
        itemArray.add(1, this.item2);
        itemArray.add(2, this.item3);
        for (T itemIterator : itemArray) {
            if (itemIterator.equals(item)) {
                count++;
            }
        }
        return count;
    }

    public boolean hasDuplicates(){
        return this.contains(this.item1) > 1 || this.contains(this.item2) > 1;
    }

    @Override
    public boolean equals(Object other){
        if (other instanceof Trio<?>) {
            Trio<?> otherTrio = (Trio<?>) other;

            return this.contains(item1) == otherTrio.contains(item1)
                    && this.contains(item2) == otherTrio.contains(item2)
                    && this.contains(item3) == otherTrio.contains(item3);
        }
        else {
            return false;
        }
    }
}