Menu
File provides methods like createNewFile() and mkdir() to create new file and directory in Java. These methods returns boolean, which is the result of that operation i.e. createNewFile() returns true if it successfully created file and mkdir() returns true if the directory is created successfully.
Creating a new directory The mkdir() method of this class creates a directory with the path represented by the current object.
The File. createNewFile() is a method of File class which belongs to a java.io package. It does not accept any argument. The method automatically creates a new, empty file.
A file system structure containing files and other directories is called directories in java, which are being operated by the static methods in the java. nio. file. files class along with other types of files, and a new directory is created in java using Files.
No.
Use tmp.getParentFile().mkdirs() before you create the file.
File theDir = new File(DirectoryPath);
if (!theDir.exists()) theDir.mkdirs();
File directory = new File(tmp.getParentFile().getAbsolutePath());
directory.mkdirs();
If the directories already exist, nothing will happen, so you don't need any checks.
Java 8 Style
Path path = Paths.get("logs/error.log");
Files.createDirectories(path.getParent());
To write on file
Files.write(path, "Log log".getBytes());
To read
System.out.println(Files.readAllLines(path));
Full example
public class CreateFolderAndWrite {
public static void main(String[] args) {
try {
Path path = Paths.get("logs/error.log");
Files.createDirectories(path.getParent());
Files.write(path, "Log log".getBytes());
System.out.println(Files.readAllLines(path));
} catch (IOException e) {
e.printStackTrace();
}
}
}
StringUtils.touch(/path/filename.ext) will now (>=1.3) also create the directory and file if they don't exist.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With