PHP 数组结构的 Java 等效项

Question

Possible Duplicate:
Java associative-array

我有一个 PHP 数组，我需要一种方法来在 Java 中描述相同类型的数组。 Java 的等价物是什么？

<?php
$data = array(
    "Artist 1" => array(
        "Album 1" => array(
            array("id", "title", "genre", "length", "year"),
            array("id", "title", "genre", "length", "year"),
            array("id", "title", "genre", "length", "year")
        ),
        "Album 2" => array(
            array("id", "title", "genre", "length", "year"),
            array("id", "title", "genre", "length", "year"),
            array("id", "title", "genre", "length", "year")
        )
    ),
    "Artist 2" => array(
        "Album 1" => array(
            array("id", "title", "genre", "length", "year"),
            array("id", "title", "genre", "length", "year")
        )
    )
);
?>

Answer 1

通过更新的示例，我将使用

List<Record> records = ...
records.add(new Record("Artist 1", "Album 1", "id", "title", "genre", "length", "year"));
// etc

之后，我将创建所需的索引，甚至使用 MySQL 等数据库或从纯 CSV 加载数据

Artist 1,Album 1,id,title,genre,length,year
Artist 1,Album 1,id,title,genre,length,year
Artist 1,Album 2,id,title,genre,length,year
Artist 1,Album 2,id,title,genre,length,year
Artist 2,Album 1,id,title,genre,length,year

<小时/>

除非有充分的理由嵌套数据，否则我会使用复合键

Map<String, List<String>> map = new LinkedHashMap<>();
map.put("1,1", Arrays.asList("abcdefgh", "abcdefgh", "abcdefgh"));
map.put("1,2", Arrays.asList("abcdefgh", "abcdefgh", "abcdefgh"));
map.put("2,1", Arrays.asList("abcdefgh", "abcdefgh"));

Java 作为一种面向对象的语言，最好尽可能使用对象来存储数据结构。