Java Program to Create Directories

In this example, we will learn how to create directories in Java. 

Create a Directory

The Java File class provides the "mkdir()" method to create a new directory. The method returns.

• "true" if the new directory is created.
• "false" if the directory already exists.

Example: Create a new directory in Java

import java.io.File;

class Main {

  public static void main(String[] args) {

    // creates a file object with specified path

    File file = new File("Java Example\\directory");

    // tries to create a new directory

    boolean value = file.mkdir();

    if(value) {

      System.out.println("The new directory is created.");

    }

    else {

      System.out.println("The directory already exists.");

    }

  }

}

In the above example, we have created a file object named "file". The object includes information about the specified directory path. 

File file = new File("Java Example\\directory");

Here, we have used the "mkdir()" method to create a new directory in the specified path.

If the directory doesn't exist in the specified location, the new directory is created and this message is shown.

The new directory is created.

 

However, if the directory already exists, we will see this message. 

The directory already exists. 

It is important to note that, the directory is created inside the Java Example parent directory.

However, if the Java Example parent directory doesn't exist, then the "mkdir()" method cannot create the directory. 

In this case, we can use the "mkdirs()" method of the Java "File" class. The method allows us to create the parent directory as well if it's not already there.

Example 2: Create a new Directory using the mkdirs() method

import java.io.File;

class Main {

  public static void main(String[] args) {

    // creates a file object in current path

    File file = new File("Java Tutorial\\abc");

    // tries to create a new directory

    boolean value = file.mkdirs();

    if(value) {

      System.out.println("The new directory is created.");

    }

    else {

      System.out.println("The directory already exists.");

    }

  }

}

In the above example, we have created a file object named file. The object includes information about the directory path.

File file = new File("Tutorial\\directory");

Here, we have used the "mkdirs()" method to create a new directory with the specified path.

If the directory doesn't exist in the current location, the new directory is created and this message is shown.

The new directory is created.

However, if the directory already exists, we will see this message.

The directory already exists.

Here, if the Tutorial directory doesn't exist, then the "mkdirs()" method creates the Tutorial directory as well along with the directory.

Note: We have used double-backslash while specifying the path. It is because the \ character is used as an escape character in Java. Hence the first backslash is used as an escape character for the second one.