How can I get all the files in a folder using Java?

2 years ago
Olivia Parker
1 minute

To retrieve all files under a folder in Java, you can implement it using a recursive approach. You can follow these steps:

  1. Create a method to retrieve all files beneath a folder, with the folder path being passed as a parameter to the method.
  2. Use the listFiles() method of the File class to get a list of files and folders in a directory.
  3. Iterate through a list of files, and for each folder, recursively call a method to retrieve all files in the folder.
  4. For each file, you can perform a corresponding action, such as printing the file path.

Here is an example code:

import java.io.File;

public class Main {
    public static void main(String[] args) {
        String folderPath = "path/to/folder";
        File folder = new File(folderPath);
        getAllFiles(folder);
    }
    
    public static void getAllFiles(File folder) {
        File[] files = folder.listFiles();
        for (File file : files) {
            if (file.isDirectory()) {
                getAllFiles(file);
            } else {
                System.out.println(file.getAbsolutePath());
            }
        }
    }
}

In the main method, passing the folder path as a parameter to the getAllFiles method will retrieve all the files within the folder.

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