jodd-core/src/main/java/jodd/io/FileUtil.java
public static File mkdirs(final File dirs) throws IOException {
		if (dirs.exists()) {
			checkIsDirectory(dirs);
			return dirs;
		}
		return checkCreateDirectory(dirs);
	}
public static File mkdirs(final File dirs) throws IOException {
		if (dirs.exists()) {
			checkIsDirectory(dirs);
			return dirs;
		}
		return checkCreateDirectory(dirs);
	}
Creates all directories at once.

@param dirs Directories to make.
@throws IOException if cannot create directory.