JSimpleCommand

public final class MySimpleCommand extends JSimpleCommand {
    public static final MySimpleCommand INSTANCE = new MySimpleCommand();
    private MySimpleCommand() {
        super(MyPlugin.INSTANCE, "tell");
        // 可选设置如下属性
        setDescription("这是一个测试指令");
        setUsage("/tell <target> <message>"); // 如不设置则自动根据带有 @Handler 的方法生成
        setPermission(CommandPermission.Operator.INSTANCE);
        setPrefixOptional(true);
    }

    @Handler
    public void onCommand(CommandSender sender, User target, String message) {
        target.sendMessage(message);
    }
}