- 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 1 U. u/ I8 j( D9 q
錯誤訊息如下
. k% I. |" }4 G) S: ]- ajva110.java:54: error: cannot find symbol9 A- |5 f+ E/ S# ]
String ans = itemAns.toLowerCass();
+ U/ W! ~0 _( \9 ? ^4 n6 a0 [0 d6 w: r$ @
symbol: method toLowerCass()' j$ w' X0 u3 p3 x/ p
location: class String8 B, C, o% B+ ], n4 N
jva110.java:55: error: cannot find symbol
$ T0 w7 j% |8 B3 @/ s useInput = useInput.toLowerCass();
/ ^9 _& {. p# K( k- S ^9 J# h$ h' {0 |
symbol: method toLowerCass()
' E" N) R/ [5 i location: variable useInput of type String1 X3 |4 z0 k$ G; Z/ H
2 errors |