如何避免此java.io.FileNotFoundException？

Question

When I enter the full file path (C:\\Users\\djustinwebb\\Documents\\BlueJ Projects\\LightHouse) for "search" and it attempts to open the file I get the error: java.io.FileNotFoundException: C:\\Users\\djustinwebb\\Documents\\BlueJ Projects\\LightHouse (Access is denied) (in java.io.FileInputStream)

I have input "invoicedata.txt" for search and it worked even though it doesn't read through the file properly but I would like to know why it won't work when I use the full file path. What do I need to do to use the full file path without running into this error?

public String searchCase()throws FileNotFoundException
{
    String fileLine = null;

    StringTokenizer stok = null;

    Scanner inputFile = new Scanner(new File(search));


    String whatever = null;



    while(inputFile.hasNextLine())
    {
        fileLine = inputFile.nextLine();
        stok = new StringTokenizer(fileLine,",");

        caseLCount++;

        while(stok.hasMoreTokens())
        {
            if(userWord.equals(stok.nextToken()))
            {
                caseWCount++;

                whatever += caseLCount + ".\n";
            }//end if
        }// end nested while
    }//end outer while
    inputFile.close();
    return whatever;
}// end searchCase()

Answer 1

This happens because you are trying to open and read a directory , which is LightHouse here. You are supposed to enter the file name in the file path as well, like this, ..\\LightHouse\\invoicedata.txt .

If you want to distinguish between files and folders, use the isFile() and isDirectory() methods. You can get the contents of folders using the list() and listFiles() methods.