java - How to check if a folder exists?

Question

I am playing a bit with the new Java 7 IO features. Actually I am trying to retrieve all the XML files in a folder. However this throws an exception when the folder does not exist. How can I check if the folder exists using the new IO?

public UpdateHandler(String release) {
    log.info("searching for configuration files in folder " + release);
    Path releaseFolder = Paths.get(release);
    try(DirectoryStream<Path> stream = Files.newDirectoryStream(releaseFolder, "*.xml")){
    
        for (Path entry: stream){
            log.info("working on file " + entry.getFileName());
        }
    }
    catch (IOException e){
        log.error("error while retrieving update configuration files " + e.getMessage());
    }
}

Answer 1

Using java.nio.file.Files:

Path path = ...;

if (Files.exists(path)) {
    // ...
}

You can optionally pass this method LinkOption values:

if (Files.exists(path, LinkOption.NOFOLLOW_LINKS)) {

There's also a method notExists:

if (Files.notExists(path)) {