This function allows you to create a directory on the user home directory.

createDirectory.java

private static void createDirectory(final String directoryName) {
	final File homeDirectory = new File(System.getProperty("user.home"));
	final File newDirectory = new File(homeDirectory, directoryName);
	if(!newDirectory.exists()) {
		boolean result = newDirectory.mkdir();

		if(result) {
			System.out.println("The directory is created !");
		}
	} else {
		System.out.println("The directory already exist");
	}
}