Java I/O - 如何创建父目录(如果不存在)

import java.io.File;



public class Main {
  public static File createFile(File destDir, String filename) {
      File file = new File(destDir, filename);
      File parent = file.getParentFile();
      if (parent != null)
          parent.mkdirs();
      return file;
  }
}