创建目录；全部不

import java.io.File;/** 来 自 n o w j a v a . c o m**/


public class Main {

  public static void main(String[] args) throws Exception {

    // Create a directory; all ancestor directories must exist

    boolean success = (new File("directoryName")).mkdir();

    if (!success) {

      // Directory creation failed

    }



    success = (new File("directoryName")).mkdirs();

    if (!success) {

      // Directory creation failed

    }

  }

}/*来自 时   代     Java  公  众  号 - nowjava.com*/