Java Utililty Methods Directory to File List

List<String> fileList = new ArrayList<String>();
File folder = new File(folderName);
if (folder.exists() && folder.isDirectory()) {
    File[] libs = folder.listFiles();
    for (File lib : libs) {
        fileList.add(lib.getPath());
return fileList;

return getAllFileNamesWithExtension(new File(directory), extension);

File f = new File(filedir);
List<File> l = new ArrayList<File>();
getFilePaths(f, l);
return l;

List<File> result = new ArrayList<>();
getAllFilesAux(dir, result);
return result;

if (!dir.isDirectory()) {
    throw new IllegalArgumentException();
Vector allFiles = new Vector();
extractFiles(dir, allFiles);
int size = allFiles.size();
File[] ret = new File[size];
for (int i = 0; i < size; i++) {
...

File[] files = dir.listFiles();
for (File file : files) {
    fileList.add(file);
    if (file.isDirectory()) {
        getAllFiles(file, fileList);

try {
    File[] files = dir.listFiles();
    for (File file : files) {
        fileList.add(file);
        if (file.isDirectory()) {
            System.out.println("directory:" + file.getCanonicalPath());
            getAllFiles(file, fileList);
        } else {
...

logger.entering("de.axelwernicke.mypod.util.FileUtils", "getAllFiles");
List<File> allFiles = new ArrayList<File>();
try {
    File[] files = dir.listFiles();
    int fileLength = files.length;
    for (int i = 0; i < fileLength; i++) {
        if (files[i].isDirectory()) {
            allFiles.addAll(getAllFiles(files[i], filter));
...

List<File> fileList = new ArrayList<File>();
File[] files = directory.listFiles();
if (files != null) {
    for (File file : files) {
        fileList.add(file);
        if (file.isDirectory()) {
            fileList.addAll(getAllFiles(file));
return fileList;

Collection<File> files = new LinkedList<File>();
getAllFilesRecursively(directory, files);
return files;