#fixed code
                               private void initCsvTests(CsvDirectory csvDirectory) throws FileNotFoundException, IOException {
      File testsRoot = getDirectory(csvDirectory.value());
      String extension = csvDirectory.extension();

      testMethods = new ArrayList<Method>();

      tests = new HashMap<String, List<List<String>>>();
      collectCsvTests(testsRoot, extension, tests);
   }
#vulnerable code 
                               private void initCsvTests(CsvDirectory csvDirectory) throws FileNotFoundException, IOException {
      File directory = getDirectory(csvDirectory.value());

      testMethods = new ArrayList<Method>();

      tests = new HashMap<String, List<List<String>>>();
      for (File f : directory.listFiles()) {
         if (f.getName().endsWith(csvDirectory.extension())) {
            tests.put(f.getAbsolutePath(), CsvReader.readCsv(new FileReader(f)));
         }
      }
   } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE