- 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
9 O5 e2 |2 b% r+ i# F0 L錯誤訊息如下$ }" P; O$ A4 ~* z
jva110.java:54: error: cannot find symbol
' l8 c/ M. I3 {6 Y6 v8 S" c String ans = itemAns.toLowerCass();
1 ~' f0 v/ M# {) N2 |! C ^
6 g& V+ z6 }, h: m; c" Z' D symbol: method toLowerCass()
" R/ G# W( A" W0 Z0 k) d( R8 b location: class String( z( q' K+ q p; {3 @* H; p
jva110.java:55: error: cannot find symbol z$ f7 k6 M0 `" ^7 A) a2 A6 }
useInput = useInput.toLowerCass();
) p) c7 V' J: P# u ^
' ^3 T ?4 v$ y; ]1 s* \. \2 r symbol: method toLowerCass()
. d) v1 S, D/ W q+ O0 [ location: variable useInput of type String
1 B, v& l1 W; q x# O$ r2 errors |