小编Mat*_*och的帖子

public static int howMany(String FileName)
{
    BufferedReader br = null;

    try
    {
        FileInputStream fis = new FileInputStream(FileName);
        DataInputStream dis = new DataInputStream(fis);
        br = new BufferedReader(new InputStreamReader(dis));
    }
    catch (FileNotFoundException e)
    {
        System.out.print("FILE DOESN'T EXIST");
    }
    finally
    {
        fis.close();
        dis.close();
        br.close();
    }


    String input;
    int count = 0;

    try
    {

        while ((input = br.readLine()) != null)
        {
            count++;
        }

    }
    catch (IOException e) 
    {
        System.out.print("I/O STREAM EXCEPTION");
    }


    return count;
}

出于某种原因,我无法关闭任何I/O对象.即使我导入了所有的I/O库(导入java.io.*;)并启动了所有对象,fis.close(),dis.close(),br.close()都给我找不到符号.