Java名稱具有變量名稱的對象

Question

所以我正在為Minecraft制作一個插件。 它基本上是一個團隊插件。 我需要做的是能夠創建多個團隊，但是我似乎無法弄清楚如何將對象名稱更改為所選團隊名稱的球員。 這是我的意思：

if (l.equalsIgnoreCase("NewTeam")) {
    teamName= args[0]; // This is the players chosen team name
     Team newTeam = new Team(teamName, sender);
     newTeam.addPlayer(sender);

由於這是一個服務器插件，因此必須處理多個團隊，這意味着它正在創建許多團隊對象，但所有對象都使用newTeam。 有誰知道我可以做的更好的方法嗎？ 謝謝。

Answer 1

您要搜索團隊名稱到團隊對象的映射嗎？ 然后，您可以按照以下步驟進行操作：

Map<String,Team> teams = new TreeMap<String,Team>();

//Returns the team for 'teamName' or creates one, if it doesn't exist
public Team getTeam(String teamName)
{
    Team team = teams.get(teamName);
    if(team == null)
    {
        team = new Team(teamName,sender); //is 'sender' specific for a team??
        teams.put(teamName,team);
    }
    return team;
}

Answer 2

我假設您正在使用Bukkit API，並且進一步說，這是在CommandExecutor的onCommand方法中完成的，所以這看起來應該是這樣的：

public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
   if(cmd.getName().equalsIgnoreCase("newteam")){ //Make sure this is the right command
      if(args.length == 0) //If the sender hasn't included a name...
         sender.sendMessage("You need to include a team name!"); //Tell them they need to
      else{ //Otherwise...
         Team newTeam = new Team(args[0]); //Create a new team with the designated name
         if(sender instanceof Player) //If the sender is a player (could be console)...
            newTeam.addPlayer((Player) sender); //Add them to the team
         /*
          * Insert some code to save/store the newly created team here
          */
      }
      return true; //Return (for Bukkit's benefit)
   }
}