Question

I have a Java program that searches through your cookies files and then saves each file into an array. I then try to search through each of those files for a certain string, however when I try to search the files I KNOW exist, java tells me that they don’t. Any ideas?

Here is my code so far:

   import java.io.*;
   import java.util.*;

   public class CheckCookie 
   {
      static String[] textFiles = new String[100];
        static String userName = "";

      public static void findCookies()
      {

         String path = "pathtocookies"; 

         String files;
         File folder = new File(path);
         File[] listOfFiles = folder.listFiles(); 

         for (int i = 0; i < listOfFiles.length; i++) 
         {

            if (listOfFiles[i].isFile()) 
            {
               files = listOfFiles[i].getName();
               if (files.endsWith(".txt") || files.endsWith(".TXT"))
               {
                  textFiles[i] = files;
               }
            }
         }
      }

      public static boolean searchCookies()
      {
         for(int j = 0; j < textFiles.length; j++) {
                String path2 = "pathtocookies"+textFiles[j];
            File file = new File(path2);

            try {
               Scanner scan = new Scanner(file);
               while (scan.hasNext()) {
                  String line = scan.nextLine();
                  if(line.contains("ineligible_age")) { 
                            System.out.println("A cookie for ineligible age was set.");             
                            return true;
                  }
               }

            } 
               catch(FileNotFoundException e) { 
               System.out.println("File was not found.");
                    return false;
               }
         }
            System.out.println("A cookie for ineligible age was not set.");
         return false;
      }

      public static void main(String[] args) 
      {
         findCookies();
            searchCookies();
            System.out.println();
            System.out.println("Finished searching for cookies. Yum.");
      }

   }

Actual path:

C:/Users/lucas.brandt/AppData/Roaming/Microsoft/Windows/Cookies

Answer 1

Use a List, instead of an array to store the textFiles.

Imagine a directory with 2 files. The first is “abc.doc”, the second “itsme.txt”

Your textFiles array will look like this:

• textFiles[0]: null
• textFiles[1]: “itsme.txt”

So you try to access “pathtocookies” + “null” which will fail, you go to the catch and return out of the function.

Further hints:

• Return the list from the first function, use it as an argument for the second function
• Use a debugger or “debug” print statements to debug your code to see whats happening

More hints depends on the actual use case.

–tb