Java Utililty Methods Path File Extention nio

List of utility methods to do Path File Extention nio

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Description

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

Method

StringgetFileExtension(final Path file)
get File Extension 
if (file == null) {
    return "";
} else {
    final String fileName = file.toString();
    return getFileExtension(fileName == null ? "" : fileName);
StringgetFileExtension(final Path path)
Return the extension of the file.
Strip all the parent folders and the name of the file to return just the file extension. 
Objects.requireNonNull(path);
if (Files.isDirectory(path)) {
    throw new IllegalArgumentException("Cannot get extension of a directory");
final String filename = path.getFileName().toString();
final int extensionSeparatorIndex = filename.lastIndexOf(FILE_EXTENSION_SEPARATOR);
if (extensionSeparatorIndex <= 0) {
    return "";
...
OptionalgetFileExtension(Path file)
Returns the extension of a file or Optional.empty() if the file does not have one (no . 
return getFileExtension(file.toString());
StringgetFileextension(Path path)
Returns the fileextension of the file represented by the given path Example: outputdir is /a/b and path represents /a/b/c/d/e.txt.tmp returns txt.tmp 
String fileextension = null;
String fullFileName = (path.getFileName() == null) ? "" : path.getFileName().toString();
if (fullFileName.contains(".")) {
    fileextension = fullFileName.substring(fullFileName.indexOf(".") + 1);
return fileextension;
StringgetFileExtension(Path path)
get File Extension 
String fileNameWithExt = path.getName(path.getNameCount() - 1).toString();
int index = fileNameWithExt.lastIndexOf('.');
if (index != -1)
    return fileNameWithExt.substring(index + 1);
else
    return null;
StringgetFileExtension(Path path)
Gets the file extension of the given path. 
String ext = path.getFileName().toString();
int index = ext.lastIndexOf('.');
if (index <= 0) {
    return "";
} else {
    return ext.substring(index, ext.length());
StringgetFileExtension(Path path)
Herausfiltern einer Dateiendung 
String fileName = path.getFileName().toString(); 
return fileName.lastIndexOf('.') == -1 ? "" : fileName.substring(fileName.lastIndexOf('.'));
StringgetFileExtension(Path path)
get File Extension 
String fname = path.getFileName().toString();
return fname.substring(fname.lastIndexOf('.') + 1);
StringgetFileNameNoExtensionFromPath(String modulePath)
Gets the name of the module, minus the windows file extension if on Windows 
Path path = Paths.get(modulePath);
String fileNameNoPath = path.getFileName().toString();
String fileNameNoExtension = fileNameNoPath;
int extIdx = 0;
if ((extIdx = fileNameNoPath.lastIndexOf(".")) != -1) {
    fileNameNoExtension = fileNameNoPath.substring(0, extIdx + 1);
return fileNameNoExtension;
...
StringgetFilenameWithoutExtension(Path file)
Gets the filename without the extension 
return getFilenameWithoutExtension(file.getFileName().toString());