具有已定义键的对象的 Java 数组

Question

我是Java的新手，我想写一个像PHP或Javasript或Python这样的代码，让我写出能够写一个文字来创建一个数组。我想在PHP中实现的东西是这样的：

$arr = [

   ['key1' => 'aaa', 'key2' => 'bbb'], 

   ['key1' => 'ccc', 'key2' => 'ddd'], 

   ['key1' => 'eee', 'key2' => 'fff']

];

看起来这在Java中是不可能的。希望是这样。谢谢。请编写尽可能简单的代码。

Answer 1

如果您使用的是 Java 版本 >= 9，请使用以下方法：&nbsp; &nbsp; List.of(&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Map.of("key1", "aaa", "key2", "bbb"),&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Map.of("key1", "ccc", "key2", "ddd"),&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Map.of("key1", "eee", "key2", "fff")&nbsp; &nbsp; );对于 Java < 8 版本：&nbsp; &nbsp; Arrays.asList(&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; new HashMap<String, String>() {{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; put("key1", "aaa");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; put("key2", "bbb");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }},&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; new HashMap<String, String>() {{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; put("key1", "ccc");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; put("key2", "ddd");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }},&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; new HashMap<String, String>() {{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; put("key1", "eee");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; put("key2", "fff");&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }}&nbsp; &nbsp; );