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/**来自 
 时代Java - N o w  J a v a . c o m**/

import java.io.*;

 

public class Main {

 

  public static void main(String[] args) {

   

    //create file object

    File dir = new File("C://Folder//DemoDirectory");

   

    boolean isDirectoryCreated = dir.mkdir();

   

    if(isDirectoryCreated)

       System.out.println("Directory created successfully");

    else

       System.out.println("Directory was not created successfully");

  }

}