Java 阵列问题

我在开发Bukkit插件时遇到了一个数组问题。为什么这样不行？它应该检查玩家是否已经放置了挡块。它一直在说钻石！！英格梅

@EventHandler
public void OnPlaceofDiamond(BlockPlaceEvent e){
    Player player = e.getPlayer();
    String storage[] = new String[100];
    int i = 0;

    if(e.getBlock().getType() == Material.DIAMOND_BLOCK){
        if(Arrays.asList(storage).contains(player.getName())){
            player.sendMessage(ChatColor.BLUE + "You are on the list");
        }else{
            player.sendMessage(ChatColor.BLUE + "DIAMONDS!!");
            storage[i] = player.getName();
            i++;
        }
    }
}

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您的问题是，每次调用BlockPlaceEvent事件时，都会创建一个全新的存储阵列。如果不希望在每次事件调用时重新创建存储，则必须将其放置在方法声明之外，如下所示：

String storage[] = new String[100];

@EventHandler
public void OnPlaceofDiamond(BlockPlaceEvent e) {
    Player player = e.getPlayer();
    int i = 0;
    //The rest of your code below
}

---

这是因为每当玩家放置块时，您都会创建一个新的存储阵列：

@EventHandler
public void OnPlaceofDiamond(BlockPlaceEvent e){
    Player player = e.getPlayer();
    String storage[] = new String[100];

所以你永远不会有完整的球员名单。要解决此问题，应在方法外部声明数组：

String storage[] = new String[100];

@EventHandler
public void OnPlaceofDiamond(BlockPlaceEvent e) {
    Player player = e.getPlayer();
    int i = 0;

    if(e.getBlock().getType() == Material.DIAMOND_BLOCK){
        if(Arrays.asList(storage).contains(player.getName())){
            player.sendMessage(ChatColor.BLUE + "You are on the list");
        }
        else{
            player.sendMessage(ChatColor.BLUE + "DIAMONDS!!");
            storage[i] = player.getName();
            i++;
        }
    }
}

---

您给出的代码将始终将播放器名称添加到存储器[0]，因为每次调用该方法时，存储器[i]=player.getName始终将i作为0。这可能是在写你想要检查的玩家名字吗？为什么你还要用数组来做这件事，而像LinkedList这样的东西也可以，而且你不会每次都把它转换成一个列表