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How to delete a directory and its contents in Java

Programming Bytes

In Java, we can loop through all the files and folders inside a directory and delete it. To delete a directory:

  • Use the Files.walk method to walk through all the files of the directory. This method returns a stream with Paths.

  • All the files are traversed in depth-first order. Reverse the stream and delete it from inner files.

  • Call Files.delete(path) to delete the file or directory.

Example

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Comparator;

public class Main {
    public static void main(String[] args) throws IOException {
        Path dir = Paths.get("path"); //path to the directory  
        Files
            .walk(dir) // Traverse the file tree in depth-first order
            .sorted(Comparator.reverseOrder())
            .forEach(path -> {
                try {
                    System.out.println("Deleting: " + path);
                    Files.delete(path);  //delete each file or directory
                } catch (IOException e) {
                    e.printStackTrace();
                }
            });
    }
}

In the above code, we looped through all the filesnormal files and directory of the directory and deleted them. This also deletes the current directory.

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