Program: 28317
Project: 28317
Buggy source:
/** 
 * Create the   {@link List} of {@link FileSubstitutionHandler} by processing the file path.The path can point to a single file\directory  or can contain pattern or wild card characters. A  {@link FileSubstitutionHandler} point to a individual file eligiblefor String substitution process.
 * @param fileEntry
 * @return List of matching substitutable entries.
 */
@SuppressWarnings("String_Node_Str") List<Substitutable> getFileElements(FileEntry fileEntry){
  String pathEntries[]=fileEntry.getName().split("String_Node_Str");
  List<Substitutable> substituables=null;
  List<File> retrievedFiles=null;
  for (  String pathEntry : pathEntries) {
    String isRegex=fileEntry.getRegex();
    if (Boolean.getBoolean(isRegex) || "String_Node_Str".equalsIgnoreCase(isRegex)) {
      File file=new File(pathEntry);
      File parentDir=file.getParentFile();
      if (parentDir == null || !parentDir.exists()) {
        continue;
      }
      retrievedFiles=new ArrayList<File>();
      String expression=file.getName();
      String[] fileList=parentDir.list();
      Pattern pattern=Pattern.compile(expression);
      for (      String fileName : fileList) {
        Matcher matcher=pattern.matcher(fileName);
        if (matcher.matches()) {
          File matchingFile=new File(parentDir,fileName);
          if (matchingFile.exists() && matchingFile.canRead() && matchingFile.canWrite()) {
            retrievedFiles.add(matchingFile);
          }
 else {
            if (_logger.isLoggable(Level.FINER)) {
              _logger.log(Level.FINER,_strings.get("String_Node_Str",matchingFile.getAbsolutePath()));
            }
          }
        }
      }
    }
 else {
      FileLister fileLocator=new FileLister();
      retrievedFiles=fileLocator.getFiles(fileEntry.getName());
    }
    if (retrievedFiles == null || retrievedFiles.isEmpty()) {
      if (_logger.isLoggable(Level.FINER)) {
        _logger.log(Level.FINER,_strings.get("String_Node_Str",pathEntry));
      }
      continue;
    }
    if (substituables == null) {
      substituables=new ArrayList<Substitutable>(retrievedFiles.size());
    }
    for (    File retrievedFile : retrievedFiles) {
      if (retrievedFile.exists()) {
        try {
          FileSubstitutionHandler substituable=retrievedFile.length() > SubstitutionFileUtil.getInMemorySubstitutionFileSizeInBytes() ? new LargeFileSubstitutionHandler(retrievedFile) : new SmallFileSubstitutionHandler(retrievedFile);
          substituables.add(substituable);
        }
 catch (        FileNotFoundException e) {
          LogHelper.log(_logger,Level.WARNING,SLogger.INVALID_FILE_LOCATION,e,retrievedFile);
        }
      }
    }
  }
  return substituables == null ? Collections.EMPTY_LIST : substituables;
}

Fixed version (ground truth):
/** 
 * Create the   {@link List} of {@link FileSubstitutionHandler} by processing the file path.The path can point to a single file\directory  or can contain pattern or wild card characters. A  {@link FileSubstitutionHandler} point to a individual file eligiblefor String substitution process.
 * @param fileEntry
 * @return List of matching substitutable entries.
 */
@SuppressWarnings("String_Node_Str") List<Substitutable> getFileElements(FileEntry fileEntry){
  String pathEntries[]=fileEntry.getName().split("String_Node_Str");
  List<Substitutable> substituables=null;
  List<File> retrievedFiles=null;
  for (  String pathEntry : pathEntries) {
    String isRegex=fileEntry.getRegex();
    if (Boolean.getBoolean(isRegex) || "String_Node_Str".equalsIgnoreCase(isRegex)) {
      File file=new File(pathEntry);
      File parentDir=file.getParentFile();
      if (parentDir == null || !parentDir.exists()) {
        continue;
      }
      retrievedFiles=new ArrayList<File>();
      String expression=file.getName();
      String[] fileList=parentDir.list();
      Pattern pattern=Pattern.compile(expression);
      for (      String fileName : fileList) {
        Matcher matcher=pattern.matcher(fileName);
        if (matcher.matches()) {
          File matchingFile=new File(parentDir,fileName);
          if (matchingFile.exists() && matchingFile.canRead() && matchingFile.canWrite()) {
            retrievedFiles.add(matchingFile);
          }
 else {
            if (_logger.isLoggable(Level.FINER)) {
              _logger.log(Level.FINER,_strings.get("String_Node_Str",matchingFile.getAbsolutePath()));
            }
          }
        }
      }
    }
 else {
      FileLister fileLocator=new FileLister();
      retrievedFiles=fileLocator.getFiles(fileEntry.getName());
    }
    if (retrievedFiles.isEmpty()) {
      if (_logger.isLoggable(Level.FINER)) {
        _logger.log(Level.FINER,_strings.get("String_Node_Str",pathEntry));
      }
      continue;
    }
    if (substituables == null) {
      substituables=new ArrayList<Substitutable>(retrievedFiles.size());
    }
    for (    File retrievedFile : retrievedFiles) {
      if (retrievedFile.exists()) {
        try {
          FileSubstitutionHandler substituable=retrievedFile.length() > SubstitutionFileUtil.getInMemorySubstitutionFileSizeInBytes() ? new LargeFileSubstitutionHandler(retrievedFile) : new SmallFileSubstitutionHandler(retrievedFile);
          substituables.add(substituable);
        }
 catch (        FileNotFoundException e) {
          LogHelper.log(_logger,Level.WARNING,SLogger.INVALID_FILE_LOCATION,e,retrievedFile);
        }
      }
    }
  }
  return substituables == null ? Collections.EMPTY_LIST : substituables;
}