Pair.java

package com.dianping.pigeon.util;

/**
 * @author qi.yin
 *         2016/11/22  下午7:13.
 */
public class Pair<K, V> {
    private K key;

    private V value;

    public Pair() {

    }

    public Pair(K key, V value) {
        this.key = key;
        this.value = value;
    }

    public K getKey() {
        return key;
    }

    public void setKey(K key) {
        this.key = key;
    }

    public V getValue() {
        return value;
    }

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

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Pair<?, ?> pair = (Pair<?, ?>) o;

        if (key != null ? !key.equals(pair.key) : pair.key != null) return false;
        return !(value != null ? !value.equals(pair.value) : pair.value != null);

    }

    @Override
    public int hashCode() {
        int result = key != null ? key.hashCode() : 0;
        result = 31 * result + (value != null ? value.hashCode() : 0);
        return result;
    }

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