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Clean Java 7 way to create file if not exists

What is the Java 7 or Java 8 way to create a file if that does not exists?

Solution

  • Not sure what you want, but for instance:

    try {
    Files.createFile(thePath);
} catch (FileAlreadyExistsException ignored) {
}

    And there are other solutions; for instance:

    if (!Files.exists(thePath, LinkOption.NOFOLLOW_LINKS))
    Files.createFile(thePath);

    Note that unlike File, these will throw exceptions if file creation fails! And relevant ones at that (for instance, AccessDeniedException, ReadOnlyFileSystemException, etc etc)

    See here for more information. Also see why you should migrate to java.nio.file, quickly.