How to create a directory in project folder using Java?

The class named File of the java.io package represents a file or directory (path names) in the system. This class provides various methods to perform various operations on files/directories.

The mkdir() method of this class creates a directory with the path represented by the current object.

Therefore, to create a directory −

• Instantiate the File class by passing the path of the directory you need to create, as a parameter (String).

• Invoke the mkdir() method using the above-created file object.

Example

The following Java example reads the path and name of the directory to be created, from the user, and creates it.

 Live Demo

import java.io.File;
import java.util.Scanner;
public class CreateDirectory {
   public static void main(String args[]) {
      System.out.println("Enter the path to create a directory: ");
      Scanner sc = new Scanner(System.in);
      String path = sc.next();
      System.out.println("Enter the name of the desired a directory: ");
      path = path+sc.next();
      //Creating a File object
      File file = new File(path);
      //Creating the directory
      boolean bool = file.mkdir();
      if(bool){
         System.out.println("Directory created successfully");
      } else {
         System.out.println("Sorry couldn’t create specified directory");
      }
   }
}

Output

Enter the path to create a directory:
D:\
Enter the name of the desired a directory:
sample_directory
Directory created successfully

If you verify, you can observe see the created directory as −

But, if you specify a path in a drive that doesn’t exist, this method will not create the required directory.

For example, if the D drive of my (windows) system is empty and if I specify the path of the directory to be created as −

D:\test\myDirectories\sample_directory

Where the test and myDirectories folders don’t exist, the mkdir() method will not create it.