「Can not find symbol class keyboard reader」 - JCreator

Question

我收到錯誤信息，「找不到符號類鍵盤閱讀器」。我究竟做錯了什麼？

import java.util.Scanner; 
public class Looping 
{ 
public static void main(String[] args) 
{ 
KeyboardReader reader = new KeyboardReader(); 
int choice = 0; 

//Menu with options 
do { 
System.out.println("Looping Menu"); 
System.out.println("1. For Loop"); 
(And so on, with a menu and options that work fine) 
} 
} 

Answer 1

您需要在使用它之前導入該類。