public class KeyValuePair<K extends Comparable<K>, V> implements Comparable<KeyValuePair<K, V>> {
    public KeyValuePair(K key, V value) {
        super();
        this.key = key;
        this.value = value;
    }

    private K key;
    private V value;


    public V getValue() {
        return value;
    }

    public void setValue(V value) {
        this.value = value;
    }

    public K getKey() {
        return key;
    }

    @Override
    public String toString() {
        return "KeyValuePair [key=" + key + ", value=" + value + "]";
    }

    @Override
    public int compareTo(KeyValuePair<K, V> o) {
        return key.compareTo(o.getKey());
    }
}