- import java.io.*;
- import java.util.*;
- public class jva110
- {
- public static void main(String arg[])
- {
-
- //取得出題數量
- int userItemCoount = arg.length / 2;
-
- //是否為使用者出題(自由出題)
- Boolean isUserItem = (userItemCoount > 0);
-
- //宣告題目陣列
- String itemQue[];
- String itemAns[];
- //判斷是否是自由出題
- if(isUserItem)
- {
- //是自由出題
-
- //建立陣列
- itemQue = new String[userItemCoount];
- itemAns = new String[userItemCoount];
- //寫入題目
- for(int i=0;i<arg.length;i+=2)
- {
- itemQue[i/2] = arg[i];
- itemAns[i/2] = arg[i+1];
- }
- }else{
- //是預設題目
- itemQue = new String[]{"電腦","資料庫","語法","學校","假期"};
- itemAns = new String[]{"computer","database","syntax","school","Vocation"};
- }
- //紀錄開始時間
- long startTime = new Date().getTime();
-
- //顯示資訊
- System.out.println("請將題目的中文字彙翻譯成英文單字!");
- System.out.println("輸入英文單字答案後請按Enter鍵:\n");
-
- //輸入擷取物件
- Scanner scanner =new Scanner(System.in);
-
- //宣告答對題目數變數
- int Right=0;
- //開始出題
- for(int i=0;i<itemQue.length;i++)
- {
- System.out.println("第" + (i+1) +"題__ " + itemQue[i]);
- String useInput = scanner.next();
-
- String ans = itemAns[i].toLowerCass();
- useInput = useInput.toLowerCass();
-
- if(useInput.equals(ans))
- {
- System.out.println("答對了!");
- Right++;
- }else{
- System.out.println("答錯了!");
- System.out.println("正確答案是" + itemAns[i]+"\n");
- }
-
- }
- //結算時間
- long endTime = new Date().getTime();
- long useTime = (endTime-startTime)/1000;
-
- System.out.println("你使用了" + useTime + "秒,在" + itemQue.length + "題中答對了" + Right + "題");
- }
- }
複製代碼 老師,為甚麼一直有兩個錯誤訊息
) }& W0 I: x m0 {9 P- U錯誤訊息如下
! o3 S+ B ]' Z* H+ ]1 rjva110.java:54: error: cannot find symbol: A; _: V9 g, x: [
String ans = itemAns.toLowerCass();
& y2 S. B# r3 ~/ y: d2 {7 O ^, k3 c; B c. u+ v- C9 _' U2 S6 t
symbol: method toLowerCass() ^* p+ r5 h! u& g$ ~
location: class String
! W! `2 a$ {) i+ Ojva110.java:55: error: cannot find symbol5 r* D6 }* |/ w
useInput = useInput.toLowerCass();& E0 n( I2 Z. Z
^9 ?- {) c* B( J% \& X8 b" I" H
symbol: method toLowerCass()- t5 m1 p: D9 q
location: variable useInput of type String
; v; M" D! Z H8 c2 G4 \3 C) i5 P% a& n2 errors |