How to delete a directory and its contents in Java

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();
                }
            });
    }
}