Java removes all files under folder for example sharing

package org.sw;
import java.io.File;
public class DeleteFolder {

    
    public void deleteFile(File oldPath) {
          if (oldPath.isDirectory()) {
           System.out.println(oldPath + " Is the folder --");
           File[] files = oldPath.listFiles();
           for (File file : files) {
             deleteFile(file);
           }
          }else{
            oldPath.delete();
          }
        }

    public static void main(String[] args) {
        DeleteFolder df =  new DeleteFolder();
        df.deleteFile(new File("E:/ddd/"));
    }
}