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

StringreadFileFromPath(String filename)
Returns file content as string, reading from a path. 
return readFileFromPath(filename, null);
StringrelativizePath(Path relativeTo, String filename)
relativize Path 
if (relativeTo == null) {
    return filename;
Path path = getAbsolutePath(filename);
if (path.startsWith(relativeTo)) {
    return relativeTo.relativize(path).toString();
} else {
    return path.toString();
...
voidrename(Path origin, Path destination)
Renames the origin path denoted by the new destination path. 
Files.move(origin, destination, StandardCopyOption.REPLACE_EXISTING);
voidrenameFile(Path filePath, String postfix)
rename File 
try {
    Path targetPath = Paths.get(filePath.toString() + postfix);
    Files.move(filePath, targetPath, REPLACE_EXISTING);
    System.out.println("INFO: File " + filePath.toString() + "is renamed to " + targetPath.toString());
} catch (IOException ioe) {
    ioe.printStackTrace();
voidrenameLogFile(Path original)
This method renames the file denoted by the file parameter by appending the current date to it and a counter if there is already a file with that name. 
if (!Files.exists(original)) {
    return;
String fullFileName = original.getFileName().toString();
int lastDot = fullFileName.lastIndexOf(".");
String nameBeforeDot = fullFileName.substring(0, lastDot);
String nameAfterDot = fullFileName.substring(lastDot + 1, fullFileName.length());
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
...
booleansaveFileFromByteArray(String filename, String pathDirectory, byte[] data)
save File From Byte Array 
Path path = Paths.get(pathDirectory);
if (Files.isDirectory(path)) {
    Path completePathToSaveFile = Paths.get(path.toString(), filename);
    if (!Files.exists(completePathToSaveFile)) {
        try {
            Files.write(completePathToSaveFile, data);
        } catch (Exception e) {
            e.printStackTrace();
...
FilesaveNamesToFile(Map namesMap, Path namesFile)
save Names To File 
final File names = namesFile.toFile();
try (BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(names))) {
    for (Map.Entry<String, Integer> entry : namesMap.entrySet()) {
        bufferedWriter.write(String.valueOf(entry.getValue()));
        bufferedWriter.write("\t");
        bufferedWriter.write(entry.getKey());
        bufferedWriter.newLine();
return names;
voidsaveToFile(String content, String directoryPath, String filename)
save To File 
createDirIfDoesNotExist(directoryPath);
try {
    Files.write(Paths.get(directoryPath + filename), content.getBytes());
} catch (IOException e) {
    e.printStackTrace();
PathshortenFileName(Path file, List dirs)
Converts an absolute file to a relative one, if possible. 
if (!file.isAbsolute()) {
    return file;
for (Path dir : dirs) {
    if (file.startsWith(dir)) {
        return dir.relativize(file);
return file;
voidstoreFile(String fileName, InputStream inputStream, Path targetPath)
store File 
if (fileName == null) {
    fileName = targetPath.toString();
String extension = fileName.substring(fileName.lastIndexOf("."));
switch (extension) {
case ".gno": {
    try (ZipInputStream zipInputStream = new ZipInputStream(inputStream)) {
        while (zipInputStream.getNextEntry() != null) {
...