Class FileUtilities

public final class FileUtilities

Static utility methods for working with file system paths and URIs, including recursive file lookup, extension/name parsing, parent directory resolution and human-readable byte size formatting.

Method Summary

Modifier and Type	Method	Description
static String	combine(String basePath, String... paths)	This method combines the specified basepath with the parts provided as arguments.
static List<String>	findFiles(List<String> fileNames, Path dir, String... files)	Recursively collects all files under dir whose absolute path ends with one of the supplied files names.
static List<String>	findFilesByExtension(List<String> fileNames, Path dir, String extension)	Recursively collects all files under dir whose absolute path ends with the supplied extension.
static String	getExtension(String path)	Returns the extension of the supplied path string (without the leading dot), or an empty string if the path has no extension.
static String	getExtension(Path file)	Returns the extension of the supplied file path (without the leading dot), or an empty string if the path has no extension.
static String	getFileName(String path)	Returns the file name (without extension) of the supplied path string.
static String	getFileName(String path, boolean extension)	Returns the file name of the supplied path string, optionally including the extension.
static String	getFileName(URL path)	Returns the file name (without extension) of the supplied URL.
static String	getParentDirPath(String uri)
static String	getParentDirPath(URI uri)
static String	humanReadableByteCount(long bytes)
static String	humanReadableByteCount(long bytes, boolean decimal)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

findFilesByExtension

public static List<String> findFilesByExtension(List<String> fileNames,
 Path dir,
 String extension)

Recursively collects all files under dir whose absolute path ends with the supplied extension.

Parameters:

fileNames - the (mutable) list that receives the matching file paths

dir - the directory to search

extension - the file extension to look for

Returns:

fileNames for chaining

findFiles

public static List<String> findFiles(List<String> fileNames,
 Path dir,
 String... files)

Recursively collects all files under dir whose absolute path ends with one of the supplied files names.

Parameters:

fileNames - the (mutable) list that receives the matching file paths

dir - the directory to search

files - the file name suffixes to look for

Returns:

fileNames for chaining

getExtension

public static String getExtension(Path file)

Returns the extension of the supplied file path (without the leading dot), or an empty string if the path has no extension.

Parameters:

file - the file path

Returns:

the extension, or ""

getExtension

public static String getExtension(String path)

Returns the extension of the supplied path string (without the leading dot), or an empty string if the path has no extension.

Parameters:

path - the path string

Returns:

the extension, or ""

getFileName

public static String getFileName(URL path)

Returns the file name (without extension) of the supplied URL.

Parameters:

path - the URL

Returns:

the file name without extension

getFileName

public static String getFileName(String path)

Returns the file name (without extension) of the supplied path string.

Parameters:

path - the path string

Returns:

the file name without extension

getFileName

public static String getFileName(String path,
 boolean extension)

Returns the file name of the supplied path string, optionally including the extension.

Parameters:

path - the path string

extension - true to keep the extension; false to strip it

Returns:

the file name

getParentDirPath

public static String getParentDirPath(String uri)

getParentDirPath

public static String getParentDirPath(URI uri)

combine

public static String combine(String basePath,
 String... paths)

This method combines the specified basepath with the parts provided as arguments. The output will use the path separator of the current system;

Parameters:

basePath - The base path for the combined path.

paths - The parts of the path to be constructed.

Returns:

The combined path.

humanReadableByteCount

public static String humanReadableByteCount(long bytes)

humanReadableByteCount

public static String humanReadableByteCount(long bytes,
 boolean decimal)

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