package com.github.underscore;

public class Tuple<A, B> {
    private final A first;
    private final B second;

    public Tuple(final A first, final B second) {
        super();
        this.first = first;
        this.second = second;
    }

    public static <A, B> Tuple<A, B> create(final A a, final B b) {
        return new Tuple<>(a, b);
    }

    public A fst() {
        return first;
    }

    public B snd() {
        return second;
    }

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

/*
 * The MIT License (MIT)
 *
 * Copyright 2015-2022 Valentyn Kolesnikov
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.github.underscore;

public class Tuple<A, B> {
    private final A first;
    private final B second;

    public Tuple(final A first, final B second) {
        super();
        this.first = first;
        this.second = second;
    }

    public static <A, B> Tuple<A, B> create(final A a, final B b) {
        return new Tuple<>(a, b);
    }

    public A fst() {
        return first;
    }

    public B snd() {
        return second;
    }

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

Update Tuple.java