[問題] 新手讀檔問題

[godpro (神)]

程式碼如下

import java.io.*;
public class test {
        public static void main(String[] args) {
                int num1,num2;
                BufferedReader in = new BufferedReader(new InputStreamReader
                                           (new FileInputStream(input.txt)));
                        num1 = in.readLine();
                        num2 = in.readLine();

                num1 = num1 + num2;
                System.out.print(num1);
        }
}

但一直編不過去
出現

--------------------Configuration: <Default>--------------------
C:\test.java:5: cannot find symbol
symbol  : variable input
location: class test
                BufferedReader in = new BufferedReader(new InputStreamReader(new
FileInputStream(input.txt)));

      ^
C:\test.java:6: incompatible types
found   : java.lang.String
required: int
                        num1 = in.readLine();
                                          ^
C:\test.java:7: incompatible types
found   : java.lang.String
required: int
                        num2 = in.readLine();
                                          ^
3 errors



將  num1 = (int)in.readLine();  也不行 囧..

input.txt 的內容為
0
10
20

我的目地是把 input.txt 的內容拿出來做運算

謝謝各位大大!

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◆ From: 114.26.30.133
推 cooper6334:1.new FileInputStream()裡面是帶字串,"input.txt"
→ cooper6334:2. readLine()的回傳值是字串,是不能強制轉型成int的
→ cooper6334:你可以考慮使用Integer.parseInt()
→ drema:Reader和Stream不能混用阿...如果你要用BufferedReader 就
→ tkcn:樓上說的是錯的，這樣接並沒有錯