Java：如何在列表中存储数据三元组？ [英] Java: how to store data triple in a list?

问题描述

java在列表中存储数据三倍的最佳方法是什么？

What's the best way in java to store data triple in a list ?

[a, b, c]
[a, b, c]
... 

我通常使用HashMap数据键+值的数据..我应该去HashMap + Arraylist吗？或者ArrayList + ArrayList？

I usually use HashMap for couples of data key + value.. should I go for HashMap + Arraylist ? or ArrayList + ArrayList ?

谢谢

推荐答案

public class Triplet<T, U, V> {

    private final T first;
    private final U second;
    private final V third;

    public Triplet(T first, U second, V third) {
        this.first = first;
        this.second = second;
        this.third = third;
    }

    public T getFirst() { return first; }
    public U getSecond() { return second; }
    public V getThird() { return third; }
}

并实例化列表：

List<Triplet<String, Integer, Integer>> = new ArrayList<>();

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