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There is a newer version: 2.2.3

/*
 *
 *
 * Copyright 2012-2015 Viant.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 *  use this file except in compliance with the License. You may obtain a copy of
 *  the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 *  License for the specific language governing permissions and limitations under
 *  the License.
 *
 */

package com.sm.utils;
public class Pair  {
    private T1 first ;
    private T2 second ;

    public Pair(T1 first, T2 second) {
        //validateNull(first, second);
        this.first = first;
        this.second = second;
    }

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

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

        Pair pair = (Pair) o;

        if (first != null ? !first.equals(pair.first) : pair.first != null) return false;
        if (second != null ? !second.equals(pair.second) : pair.second != null) return false;

        return true;
    }

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

    public T1 getFirst() {
        return first;
    }

    public void setFirst(T1 first) {
        //validateNull( first);
        this.first = first;
    }

    public T2 getSecond() {
        return second;
    }

    public void setSecond(T2 second) {
        //validateNull( second);
        this.second = second;
    }
}