Recursively delete a file and all its contents in Java

//w  ww.j  a  v  a  2s.c o  m
import java.io.File;

public class Main {
  /**
   * Recursively delete a file and all its contents.
   * 
   * @param root
   *          the root to delete
   */
  public static void recursiveDelete(File root) {
    if (root == null) {
      return;
    }

    if (root.isDirectory()) {
      File[] files = root.listFiles();
      if (files != null) {
        for (int i = 0; i < files.length; i++) {
          File file = files[i];
          if (file.isDirectory()) {
            recursiveDelete(file);
          } else {
            file.delete();
          }
        }
      }
    }
    root.delete();
  }
}