Checking for a file in a dir + all subdir's

Question

i'm checking if a file exists in C:/, and all sub directories of C:/. It's easy enough to scan for it in the parent directory, but how would i go about checking all the sub directories also? I couldn't get a system of using the boolean isDirectory working, here's what I have though:
import java.io.File.*;
import java.io.*;
class Readit {
     File file;
     Readit(String fileName) {
          file = new File(fileName);
          check(file);
     void check(File file) {
          try {
               if(file.exists()) {
                    String files[] = file.list();
                    for(int i = 0; i < files.length; i++) {
                         System.out.println(files);
                         File subdir = new File(files[i]);
                         if(subdir.isDirectory()) {
                              String infil[] = subdir.list();
                         }{color}
          } catch(NullPointerException nul) {}
     public static void main(String[] args) {
          Readit r = new Readit(args[0]);
}Edited by: Pattylulz on Jun 10, 2008 8:43 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

It is not clear what exactly you need.
I assume that you want to find recursively a file/folder with given name:
   private static final FileSystemView fsv =
            FileSystemView.getFileSystemView();
   private static final File checkFile(File pathParent,
                                       String name) {
      final File[] list = pathParent.listFiles();
      if (null == list)
         return null;
      File pathFound = null;
      for (int i = 0; i < list.length && null == pathFound; i++) {
         final File pathCur = list;
// Can use system display name or name (pathCur.getName())
final String nameCur = fsv.getSystemDisplayName(pathCur);
// If you need to search only files, use: pathCur.isFile()
if (name.equalsIgnoreCase(nameCur)) {// or equals
pathFound = pathCur;
} else {
// All traversable items, but skip links to folders
boolean isLink = false;
try {
isLink = ShellFolder.getShellFolder(pathCur).isLink();
} catch (FileNotFoundException e) {
if (fsv.isTraversable(pathCur) && false == isLink) {
// Recursive is subfolders
pathFound = checkFile(pathCur, name);
return pathFound;
public static void main(String[] args) {
File file = checkFile(new File("C:\\"), args[0]);
if (null != file)
System.out.println("File is found: " + file);
else
System.err.println("Cannot find file with name: " + args[0]);
Mimo