如何在Java中从数组中打印出随机字符串

Question

嗨，我一直试图让我的第一场比赛暂时但是遇到了困难。我想从一个字符串数组中拉出一个随机字符串，然后打印出来，但我的代码中有错误。我已经看了一遍，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，我认为这会弄乱一切，但我不知道错误可能在任何地方。

感谢任何帮助：）

Answer 1

你必须改变两件事：

1. currentRoom应为String Array

2. 打印字符串数组应使用Arrays.toString

   完成

            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));
   

示例输出

[Goblin Home1, Spider Nest1]

希望这有帮助！

Answer 2

为什么需要2D数组字符串？ 我认为你可以用一维数组来管理。

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);