Java Utililty Methods Path File Check nio

List of utility methods to do Path File Check nio

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Description

The list of methods to do Path File Check nio are organized into topic(s).

Method

booleanisAbsolute(String path)
is Absolute 
return toPath(path).isAbsolute();
booleanisAbsolutePath(String path)
is Absolute Path 
return Paths.get(path).isAbsolute();
booleanisAsciiText(Path p)
Guess whether a file is ASCII text format, using a default threshold where the number of non-ASCII characters found must be < 30% 
char[] buf = new char[DEFAULT_BLOCK_SIZE];
try (BufferedReader reader = Files.newBufferedReader(p, Charset.forName("US-ASCII"))) {
    reader.read(buf);
} catch (MalformedInputException e) {
    return false;
return true;
booleanisBallerinaProject(Path path)
Is path is a valid ballerina project directory. 
boolean isProject = false;
Path cachePath = path.resolve(".ballerina");
if (Files.exists(cachePath)) {
    isProject = true;
return isProject;
booleanisBinary(Path file)
is Binary 
String fileName = file.getFileName().toString();
return (fileName.endsWith(JAR_SUFFIX)
        && !fileName.endsWith(SOURCE_JAR_SUFFIX));
booleanisContained(Path contained, Path container)
Inspired by http://stackoverflow.com/questions/18227634/check-if-file-is-in-subdirectory 
Path current = contained.normalize();
while (current != null) {
    if (Files.isSameFile(container, current)) {
        return true;
    current = current.getParent();
return false;
...
booleanisDirectory(Path fileOrDir, LinkOption... options)
is Directory 
return Files.isDirectory(fileOrDir, options);
booleanisDirectory(Path value)
is Directory 
return Files.isDirectory(value);
booleanisDirectoryEmpty(Path dir)
is Directory Empty 
try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(dir)) {
    return !dirStream.iterator().hasNext();
booleanisDirectoryEmpty(Path directory)
Check if the directory is empty. 
boolean retval = true;
DirectoryStream<Path> dirStream = Files.newDirectoryStream(directory);
if (dirStream.iterator().hasNext()) {
    retval = false;
dirStream.close();
return retval;