Question

how would i do subdirectory because i want to be able to grab all subdirectory out of a directory and still be able to get add them


I have a subdirectory called testFolder in it contains the following: 
defaulfolder.1
defaultfolder
defaultfolder2.1
defaultfolder2

I only want to be able to grab the default folder without the "." 

i would like to get a test output of the answers


import java.io.File;
import java.util.ArrayList;
import java.util.List;



public class checkFile {

    private List<File> tests;

    public List<File> getFile(String file) {
        File f = new File(file);
        tests = new ArrayList<File>();
        if (f.isDirectory()) 
         {
            if (f.listFiles() != null)
              {
                  if(!f.getName().contains("."))
                    {
                       for (File item : f.listFiles()) {
                         tests.add(item.getName());
                      }
                   }
        } else {
            tests.add(f.getName());
        }
        return tests;
    }
}

public static void main(Stringg[] args)

{

   String test = "C:\\User\\Name\\Desktop\\testFolder

   checkFile test = new checkFile();

test.getFile(test);

}

Answer 1

import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.List;

public class Subdirectories {
  
public static final String FOLDER_PATH = System.getProperty("user.home") // this path can be changed
+ File.separatorChar + "Desktop" // I tested on Desktop
+ File.separatorChar;
  
public static final String ROOT_FOLDER_NAME = "testFolder"; // root folder name
  
public static void main(String[] args)
{
String FINAL_FOLDER_PATH = FOLDER_PATH + ROOT_FOLDER_NAME;
  
// prints all the subdirectories under the root directory "testFolder"
System.out.println("All the directories under " + ROOT_FOLDER_NAME + ": ");
for(String folderName : listFoldersInDirectory(FINAL_FOLDER_PATH))
{
System.out.println(folderName);
}
  
// get the folder(s) without dot in their name
System.out.println("\nAll directories without dot in their name:");
for(String folderNameWithoutDot : getFolderWithoutDot(listFoldersInDirectory(FINAL_FOLDER_PATH)))
{
System.out.println(folderNameWithoutDot);
}
}
  
public static List<String> listFoldersInDirectory(String folderPath)
{
File folder = new File(folderPath);
FileFilter folderFilter = new FileFilter()
{
@Override
public boolean accept(File file) {
return file.isDirectory();
}
  
};
  
File[] foldersAsFiles = folder.listFiles(folderFilter);
List<String> folderList = new ArrayList<>(foldersAsFiles.length);
for(File folders : foldersAsFiles)
{
folderList.add(folders.getName());
}
return folderList;
}
  
public static List<String> getFolderWithoutDot(List<String> folderList)
{
List<String> foldersWithoutDot = new ArrayList<>();
for(String folderNameWithoutDot : folderList)
{
if(!folderNameWithoutDot.contains("."))
{
foldersWithoutDot.add(folderNameWithoutDot);
}
}
return foldersWithoutDot;
}
}