br.usp.poli.lta.cereda.wirth2ape.tuple.Pair.java Source code

Introduction

Here is the source code for br.usp.poli.lta.cereda.wirth2ape.tuple.Pair.java

Source

/**
* ------------------------------------------------------
*    Laboratrio de Linguagens e Tcnicas Adaptativas
*       Escola Politcnica, Universidade So Paulo
* ------------------------------------------------------
* 
* This program is free software: you can redistribute it
* and/or modify  it under the  terms of the  GNU General
* Public  License  as  published by  the  Free  Software
* Foundation, either  version 3  of the License,  or (at
* your option) any later version.
* 
* This program is  distributed in the hope  that it will
* be useful, but WITHOUT  ANY WARRANTY; without even the
* implied warranty  of MERCHANTABILITY or FITNESS  FOR A
* PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
* 
**/
package br.usp.poli.lta.cereda.wirth2ape.tuple;

import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;

/**
 * @author Paulo Roberto Massa Cereda
 * @version 1.0
 * @since 1.0
 */
public class Pair<A, B> {

    private A first;
    private B second;

    public Pair(A first, B second) {
        this.first = first;
        this.second = second;
    }

    public A getFirst() {
        return first;
    }

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

    public B getSecond() {
        return second;
    }

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

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("(").append(first);
        sb.append(", ").append(second);
        sb.append(")");
        return sb.toString();
    }

    public Pair() {
    }

    @Override
    public int hashCode() {
        return new HashCodeBuilder().append(first).append(second).build();
    }

    @Override
    public boolean equals(Object object) {
        if (object == null) {
            return false;
        }
        if (getClass() != object.getClass()) {
            return false;
        }
        final Pair<?, ?> reference = (Pair<?, ?>) object;
        return new EqualsBuilder().append(first, reference.first).append(second, reference.second).isEquals();
    }

}