Box (Generics)

public class Box<T> {

    private T thing;
    private int thingCount;

    public Box(T firstThing) {
        this.thing = firstThing;
        this.thingCount = 1;
    }

    public T getContents() {
        return thing;
    }
    public int getCount() {
        return thingCount;
    }

    public void replaceContents(T newThing) {
        this.thing = newThing;
        thingCount++;
    }

    @Override
    public String toString() {
        return thing.toString() + " (item " + thingCount + ")";
    }

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

            boolean sameThing = this.thing.equals(otherBoxR.thing);
            boolean sameCount = this.thingCount==otherBoxR.thingCount;

            return sameThing && sameCount;

        } else {
            return false;
        }
    }

}