Minecraft Spigot 插件编码,Player.sendMessage 有问题

Minecraft Spigot Plugin coding, having issue with Player.sendMessage

我在编写一个简单的 Minecraft 1.10 测试插件时在 Eclipse Java Mars 上收到以下错误:"Cannot make a static reference to the non-static method sendMessage(String) from the type CommandSender."这是一个单独的 class 命令,除了主要class。这是整个 class:

package io.github.ultraMLGcode.TestPlugin;

import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class TestPluginCommandExecutor implements CommandExecutor {

   public TestPlugin plugin;

   public TestPluginCommandExecutor(TestPlugin instance) {
       plugin = instance;
   }


 public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
    if (cmd.getName().equalsIgnoreCase("basic") && sender instanceof Player) { //If the player typed /basic then do the following...

      if (sender instanceof Player) {
          Player player = (Player) sender;
          //do something
          Player.sendMessage("Hello, it is a nice day, isn't it?");
      } else {
          sender.sendMessage("You must be a player!");
      }

        //doSomething
        return true;
    }
      return false;
    }

}

我不知道 minecraft api,但我认为这会有所帮助:

更改此行:

Player.sendMessage("Hello, it is a nice day, isn't it?");

到这一行

player.sendMessage("Hello, it is a nice day, isn't it?");

我认为"sendMessage"是一个非静态方法。

希望对您有所帮助。