arrays - 如何从Java中的数组中打印出随机字符串

Question

嗨，我一直在尝试制作我的第一款游戏，但遇到了困难。我想从字符串数组中提取一个随机字符串，然后将其打印出来，但我的代码中有错误。我已经看遍了，但我找不到解决方案。这是代码：（我已经声明了 currentRoom 变量）

      int currentRoom;
String [][] rooms = {{"Start", "Treasure Room1"}, {"Goblin Home1", "Spider Nest1"}};

Random rand = new Random()
currentRoom = rooms [rand.nextInt( rooms.length)];


System.out.println(currentRoom);

我在第 6 行的 currentRoom 变量上有一个错误，我认为这把一切都搞砸了，但我不知道所以错误可能在任何地方。

任何帮助表示赞赏:)

Answer 1

你必须改变两件事：

1. currentRoom 应该是字符串数组

2. 打印字符串数组应该使用 Arrays.toString

            String[] currentRoom;
        String [][] rooms = {{"Start", "Treasure Room1"}, {"Goblin Home1", "Spider Nest1"}};
   
        Random rand = new Random();
   
        currentRoom = rooms [rand.nextInt(rooms.length)];
   
   
        System.out.println(Arrays.toString(currentRoom));
   

样本输出

[Goblin Home1, Spider Nest1]

希望这可以帮助！

Answer 2

为什么需要二维字符串数组？我认为您可以改为使用一维数组进行管理。

String currentRoom;
String[] rooms = {"Start", "Treasure Room1", "Goblin Home1", "Spider Nest1"};
Random rand = new Random();
currentRoom = rooms [rand.nextInt( rooms.length)];

System.out.println(currentRoom);

Answer 3

String currentRoom;
String [][] rooms = {{"Start", "Treasure Room1"}, {"Goblin Home1", "Spider Nest1"}};

Random rand = new Random();
int rnd = rand.nextInt( rooms.length);
currentRoom = rooms [rnd][0] + ":"+ rooms [rnd][1];

System.out.println(currentRoom);