There are several ways to create a directory in Java upon the java version you are using, In this tutorial, we are going to see the ways to create a directory using Java.

How to create directory in Java:

Java 7 introduced an incredible nio package, it helps us do a lot of io operations like reading the present working directory in a better way, lets try to create a directory using nio.

1.Create Directory Java NIO:

With Java 7 nio, you can use Files.createDirectory() to create a new directory. It takes a Path as a parameter and creates a directory under the specified Path, it also takes an optional array of FileAttrubite parameters (key values pairs of file attributes), these attributes to be set automatically while creating the directory.

JavaCreateDirectory.java
public class JavaCreateDirectory {
    public static void main(String[] args) throws Exception {
        Path path = Paths.get("/Users/chandra/Work/hello/");
        Files.createDirectory(path);
    }
}

1.1 Create Directories Java NIO:

Files.createDirectories() creates a directory by creating all nonexistent parent directories first. Unlike Files.createDirectory() it doesn’t throw an exception if the directory could not be created because it already exists.

JavaCreateDirectory.java
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class JavaCreateDirectory {
    public static void main(String[] args) throws Exception {
        Path path = Paths.get("/Users/chandra/Work/hello/parent1/parent2/");
        Files.createDirectories(path);
    }
}

2. Create a Directory Apache Commons:

Apache Commons is a great library for handling io operations, it provides a lot of useful methods.

pom.xml
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.7</version>
</dependency>

FileUtils.forceMkdir() it makes a directory, including any necessary but nonexistent parent directories. If a file already exists with a specified name but it is not a directory then an IOException is thrown.

JavaCreateDirectory.java
public class JavaCreateDirectory {
    public static void main(String[] args) throws Exception {
        FileUtils.forceMkdir("/path/directory");
    }
}

3. Create a Directory Legacy IO:

The legacy java users can use the File object to create directory(s); java.io.File class having the same methods mkdir() and mkdirs() to create a directory or directories.

The mkdir() and mkdirs() methods returns boolean –true if and only if the directory was created; false otherwise

JavaCreateDirectory.java
public class JavaCreateDirectory {
    public static void main(String[] args) throws Exception {
        File file = new File("/Users/chandra/dir1/dir2/dir2/");

        if (file.mkdirs()) {
            System.out.println("Directories are created!");
        } else {
            System.out.println("Failed to create directories");
        }
    }
}

References:

Happy Learning 🙂

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