Java Utililty Methods Path File Name nio

List of utility methods to do Path File Name nio

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Description

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

Method

StringgetNormalizedFileName(Path file)
get Normalized File Name 
String normalizedFileName = file.toAbsolutePath().normalize().toString();
if (File.separatorChar != '/') {
    normalizedFileName = normalizedFileName.replace(File.separatorChar, '/');
return normalizedFileName;
StringgetPackageURI(String pkgName, String pkgPath, String currentPkgName)
Get the package URI to the given package name. 
String newPackagePath;
if (pkgPath != null && !currentPkgName.equals(".")) {
    int indexOfCurrentPkgName = pkgPath.lastIndexOf(currentPkgName);
    if (indexOfCurrentPkgName >= 0) {
        newPackagePath = pkgPath.substring(0, indexOfCurrentPkgName);
    } else {
        newPackagePath = pkgPath;
    if (pkgName.equals(".")) {
        newPackagePath = Paths.get(newPackagePath).toString();
    } else {
        newPackagePath = Paths.get(newPackagePath, pkgName).toString();
} else {
    newPackagePath = pkgPath;
return newPackagePath;
PathgetPath(Class example, String filename)
get Path 
final File f = new File(example.getProtectionDomain().getCodeSource().getLocation().getPath());
String path = f.getAbsolutePath();
int subPathIndex = path.indexOf("Examples");
String subPath = path.substring(0, subPathIndex) + "Data/" + filename;
Path p = Paths.get(subPath);
return p;
PathgetPath(Class baseClass, String resourceName)
get Path 
URL url = baseClass.getResource(resourceName);
if (url == null) {
    throw new FileNotFoundException(String.format("Resource file is not found. %s", resourceName));
return Paths.get(url.toURI());
PathgetPath(File dir, String filename)
get Path 
Path path = FileSystems.getDefault().getPath(dir.getAbsolutePath(), filename);
return path;
StringgetPath(final String fullFileName)
Returns the path (without the file-name) for a filename with path. 
return Paths.get(fullFileName).getParent().toString();
PathgetPath(Object name)
get Path 
Objects.requireNonNull(name);
if (name instanceof Path) {
    return (Path) name;
if (name instanceof File) {
    return ((File) name).toPath();
String p = name.toString();
...
StringgetPath(String dirName, String fileName)
get Path 
return Paths.get(dirName, fileName).toString();
StringgetPathByClassName(Class clazz, String relativeDir)
Acquire a full path string by given class name and relative path string. 
String javaSourcePath = System.getProperty("test.src").replaceAll("\\" + File.separator, FILE_SEP);
String normalizedPath = Paths.get(javaSourcePath, relativeDir).normalize().toAbsolutePath().toString();
return normalizedPath.replace("\\", FILE_SEP) + FILE_SEP;
PathgetPathByFilename(String filename, List files)
Find a file by it's filename. 
for (Path file : files) {
    Path fname = file.getFileName();
    if (fname != null && fname.toString().equals(filename)) {
        return file;
return null;