Java Pair implementation

Pair.java

public class Pair<F extends Comparable<F>, S extends Comparable<S>> implements Comparable<Pair<F, S>>{
    private F first;
    private S second;

    public Pair() {
    }

    public Pair(F first, S second) {
        this.first = first;
        this.second = second;
    }

    public F getFirst() {
        return first;
    }

    public void setFirst(F first) {
        this.first = first;
    }

    public S getSecond() {
        return second;
    }

    public void setSecond(S second) {
        this.second = second;
    }

    @Override
    public int compareTo(Pair<F, S> p) {
        int result = this.first.compareTo(p.first);
        if (result == 0) {
            return this.second.compareTo(p.second);
        }
        return result;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Pair<?, ?> pair = (Pair<?, ?>) o;
        return Objects.equals(first, pair.first) && Objects.equals(second, pair.second);
    }

    @Override
    public int hashCode() {
        return Objects.hash(first, second);
    }

    @Override
    public String toString() {
        return "Pair{" +
                "first=" + first +
                ", second=" + second +
                '}';
    }
}