- /*
- * Copyright 2001-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.commons.io;
-
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileNotFoundException;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.FileFilter;
- import java.io.OutputStream;
- import java.net.URL;
- import java.util.Collection;
- import java.util.Date;
-
- import org.apache.commons.io.filefilter.DirectoryFileFilter;
- import org.apache.commons.io.filefilter.FalseFileFilter;
- import org.apache.commons.io.filefilter.FileFilterUtils;
- import org.apache.commons.io.filefilter.IOFileFilter;
- import org.apache.commons.io.filefilter.SuffixFileFilter;
- import org.apache.commons.io.filefilter.TrueFileFilter;
-
- /**
- * This class provides basic facilities for manipulating files and file paths.
- *
- * <h3>Path-related methods</h3>
- *
- * <p>Methods exist to retrieve the components of a typical file path. For example
- * <code>/www/hosted/mysite/index.html</code>, can be broken into:
- * <ul>
- * <li><code>/www/hosted/mysite/</code> -- retrievable through {@link #getPath}</li>
- * <li><code>index.html</code> -- retrievable through {@link #removePath}</li>
- * <li><code>/www/hosted/mysite/index</code> -- retrievable through {@link #removeExtension}</li>
- * <li><code>html</code> -- retrievable through {@link #getExtension}</li>
- * </ul>
- * There are also methods to {@link #catPath concatenate two paths}, {@link #resolveFile resolve a
- * path relative to a File} and {@link #normalize} a path.
- * </p>
- *
- * <h3>File-related methods</h3>
- * <p>
- * There are methods to create a {@link #toFile File from a URL}, copy a
- * {@link #copyFileToDirectory File to a directory},
- * copy a {@link #copyFile File to another File},
- * copy a {@link #copyURLToFile URL's contents to a File},
- * as well as methods to {@link #deleteDirectory(File) delete} and {@link #cleanDirectory(File)
- * clean} a directory.
- * </p>
- *
- * Common {@link java.io.File} manipulation routines.
- *
- * <h3>Origin of code</h3>
- * <ul>
- * <li>commons-utils repo</li>
- * <li>Alexandria's FileUtils.</li>
- * <li>Avalon Excalibur's IO.</li>
- * </ul>
- *
- * @author <a href="mailto:burton@relativity.yi.org">Kevin A. Burton</A>
- * @author <a href="mailto:sanders@apache.org">Scott Sanders</a>
- * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
- * @author <a href="mailto:Christoph.Reck@dlr.de">Christoph.Reck</a>
- * @author <a href="mailto:peter@apache.org">Peter Donald</a>
- * @author <a href="mailto:jefft@apache.org">Jeff Turner</a>
- * @author Matthew Hawthorne
- * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
- * @version $Id: FileUtils.java,v 1.31 2004/04/24 19:46:16 jeremias Exp $
- */
- public class FileUtils {
-
- /**
- * Instances should NOT be constructed in standard programming.
- */
- public FileUtils() { }
-
- /**
- * The number of bytes in a kilobyte.
- */
- public static final long ONE_KB = 1024;
-
- /**
- * The number of bytes in a megabyte.
- */
- public static final long ONE_MB = ONE_KB * ONE_KB;
-
- /**
- * The number of bytes in a gigabyte.
- */
- public static final long ONE_GB = ONE_KB * ONE_MB;
-
- /**
- * Returns a human-readable version of the file size (original is in
- * bytes).
- *
- * @param size The number of bytes.
- * @return A human-readable display value (includes units).
- * @todo need for I18N?
- */
- public static String byteCountToDisplaySize(long size) {
- String displaySize;
-
- if (size / ONE_GB > 0) {
- displaySize = String.valueOf(size / ONE_GB) + " GB";
- } else if (size / ONE_MB > 0) {
- displaySize = String.valueOf(size / ONE_MB) + " MB";
- } else if (size / ONE_KB > 0) {
- displaySize = String.valueOf(size / ONE_KB) + " KB";
- } else {
- displaySize = String.valueOf(size) + " bytes";
- }
-
- return displaySize;
- }
-
-
- /**
- * Implements the same behaviour as the "touch" utility on Unix. It creates
- * a new file with size 0 or, if the file exists already, it is opened and
- * closed without modifying it, but updating the file date and time.
- * @param file the File to touch
- * @throws IOException If an I/O problem occurs
- */
- public static void touch(File file) throws IOException {
- OutputStream out = new java.io.FileOutputStream(file);
- IOUtils.closeQuietly(out);
- }
-
-
- private static void innerListFiles(Collection files, File directory, IOFileFilter filter) {
- File[] found = directory.listFiles((FileFilter)filter);
- for (int i = 0; i < found.length; i++) {
- if (found[i].isDirectory()) {
- innerListFiles(files, found[i], filter);
- } else {
- files.add(found[i]);
- }
- }
- }
-
-
- /**
- * Converts a Collection containing java.io.File instanced into array
- * representation. This is to account for the difference between
- * File.listFiles() and FileUtils.listFiles().
- * @param files a Collection containing java.io.File instances
- * @return an array of java.io.File
- */
- public static File[] convertFileCollectionToFileArray(Collection files) {
- return (File[])files.toArray(new File[files.size()]);
- }
-
-
- /**
- * <p>Finds files within a given directory (and optionally its
- * subdirectories). All files found are filtered by an IOFileFilter.
- * </p>
- * <p>If your search should recurse into subdirectories you can pass in
- * an IOFileFilter for directories. You don't need to bind a
- * DirectoryFileFilter (via logical AND) to this filter. This method does
- * that for you.
- * </p>
- * <p>An example: If you want to search through all directories called
- * "temp" you pass in <code>FileFilterUtils.NameFileFilter("temp")</code>
- * </p>
- * <p>Another common usage of this method is find files in a directory
- * tree but ignoring the directories generated CVS. You can simply pass
- * in <code>FileFilterUtils.makeCVSAware(null)</code>.
- * </p>
- * @param directory the directory to search in
- * @param fileFilter filter to apply when finding files.
- * @param dirFilter optional filter to apply when finding subdirectories.
- * If this parameter is null, subdirectories will not be included in the
- * search. Use TrueFileFilter.INSTANCE to match all directories.
- * @return an collection of java.io.File with the matching files
- * @see org.apache.commons.io.filefilter.FileFilterUtils
- * @see org.apache.commons.io.filefilter.NameFileFilter
- */
- public static Collection listFiles(File directory, IOFileFilter fileFilter, IOFileFilter dirFilter) {
- if (!directory.isDirectory()) {
- throw new IllegalArgumentException("Parameter 'directory' is not a directory");
- }
- if (fileFilter == null) {
- throw new NullPointerException("Parameter 'fileFilter' is null");
- }
-
- //Setup effective file filter
- IOFileFilter effFileFilter = FileFilterUtils.andFileFilter(fileFilter,
- FileFilterUtils.notFileFilter(DirectoryFileFilter.INSTANCE));
-
- //Setup effective directory filter
- IOFileFilter effDirFilter;
- if (dirFilter == null) {
- effDirFilter = FalseFileFilter.INSTANCE;
- } else {
- effDirFilter = FileFilterUtils.andFileFilter(dirFilter,
- DirectoryFileFilter.INSTANCE);
- }
-
- //Find files
- Collection files = new java.util.LinkedList();
- innerListFiles(files, directory,
- FileFilterUtils.orFileFilter(effFileFilter, effDirFilter));
- return files;
- }
-
-
- /**
- * Converts an array of file extensions to suffixes for use
- * with IOFileFilters.
- * @param extensions an array of extensions. Format: {"java", "xml"}
- * @return an array of suffixes. Format: {".java", ".xml"}
- */
- private static String[] toSuffixes(String[] extensions) {
- String[] suffixes = new String[extensions.length];
- for (int i = 0; i < extensions.length; i++) {
- suffixes[i] = "." + extensions[i];
- }
- return suffixes;
- }
-
-
- /**
- * Finds files within a given directory (and optionally its subdirectories)
- * which match an array of extensions.
- * @param directory the directory to search in
- * @param extensions an array of extensions, ex. {"java","xml"}. If this
- * parameter is null, all files are returned.
- * @param recursive If true all subdirectories are searched, too.
- * @return an collection of java.io.File with the matching files
- */
- public static Collection listFiles(File directory, String[] extensions, boolean recursive) {
- IOFileFilter filter;
- if (extensions == null) {
- filter = TrueFileFilter.INSTANCE;
- } else {
- String[] suffixes = toSuffixes(extensions);
- filter = new SuffixFileFilter(suffixes);
- }
- return listFiles(directory, filter,
- (recursive ? TrueFileFilter.INSTANCE : FalseFileFilter.INSTANCE));
- }
-
-
- /**
- * <p>Compare the contents of two files to determine if they are equal or not.</p>
- * <p>Code origin: Avalon</p>
- *
- * @param file1 the first file
- * @param file2 the second file
- * @return true if the content of the files are equal or they both don't exist, false otherwise
- * @throws IOException in case of an I/O error
- */
- public static boolean contentEquals(File file1, File file2)
- throws IOException {
- boolean file1Exists = file1.exists();
- if (file1Exists != file2.exists()) {
- return false;
- }
-
- if (!file1Exists) {
- // two not existing files are equal
- return true;
- }
-
- if (file1.isDirectory() || file2.isDirectory()) {
- // don't want to compare directory contents
- throw new IOException("Can't compare directories, only files");
- }
-
- InputStream input1 = null;
- InputStream input2 = null;
- try {
- input1 = new java.io.FileInputStream(file1);
- input2 = new java.io.FileInputStream(file2);
- return IOUtils.contentEquals(input1, input2);
-
- } finally {
- IOUtils.closeQuietly(input1);
- IOUtils.closeQuietly(input2);
- }
- }
-
- /**
- * Convert from a <code>URL</code> to a <code>File</code>.
- * @param url File URL.
- * @return The equivalent <code>File</code> object, or <code>null</code> if the URL's protocol
- * is not <code>file</code>
- */
- public static File toFile(URL url) {
- if (url.getProtocol().equals("file") == false) {
- return null;
- } else {
- String filename =
- url.getFile().replace('/', File.separatorChar);
- return new File(filename);
- }
- }
-
- /**
- * Convert the array of Files into a list of URLs.
- *
- * @param files the array of files
- * @return the array of URLs
- * @throws IOException if an error occurs
- */
- public static URL[] toURLs(File[] files) throws IOException {
- URL[] urls = new URL[files.length];
-
- for (int i = 0; i < urls.length; i++) {
- urls[i] = files[i].toURL();
- }
-
- return urls;
- }
-
-
- /**
- * Copy file from source to destination. If <code>destinationDirectory</code> does not exist, it
- * (and any parent directories) will be created. If a file <code>source</code> in
- * <code>destinationDirectory</code> exists, it will be overwritten.
- * The copy will have the same file date as the original.
- *
- * @param source An existing <code>File</code> to copy.
- * @param destinationDirectory A directory to copy <code>source</code> into.
- *
- * @throws FileNotFoundException if <code>source</code> isn't a normal file.
- * @throws IllegalArgumentException if <code>destinationDirectory</code> isn't a directory.
- * @throws IOException if <code>source</code> does not exist, the file in
- * <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
- */
- public static void copyFileToDirectory(
- File source,
- File destinationDirectory)
- throws IOException {
- if (destinationDirectory.exists()
- && !destinationDirectory.isDirectory()) {
- throw new IllegalArgumentException("Destination is not a directory");
- }
-
- copyFile(source, new File(destinationDirectory, source.getName()), true);
- }
-
- /**
- * Copy file from source to destination. The directories up to
- * <code>destination</code> will be created if they don't already exist.
- * <code>destination</code> will be overwritten if it already exists.
- * The copy will have the same file date as the original.
- *
- * @param source An existing non-directory <code>File</code> to copy
- * bytes from.
- * @param destination A non-directory <code>File</code> to write bytes to
- * (possibly overwriting).
- *
- * @throws IOException if <code>source</code> does not exist, <code>destination</code> cannot be
- * written to, or an IO error occurs during copying.
- *
- * @throws FileNotFoundException if <code>destination</code> is a directory
- * (use {@link #copyFileToDirectory}).
- */
- public static void copyFile(File source, File destination)
- throws IOException {
- copyFile(source, destination, true);
- }
-
-
- /**
- * Copy file from source to destination. The directories up to
- * <code>destination</code> will be created if they don't already exist.
- * <code>destination</code> will be overwritten if it already exists.
- *
- * @param source An existing non-directory <code>File</code> to copy
- * bytes from.
- * @param destination A non-directory <code>File</code> to write bytes to
- * (possibly overwriting).
- * @param preserveFileDate True if the file date of the copy should be the
- * same as the original.
- *
- * @throws IOException if <code>source</code> does not exist, <code>destination</code> cannot be
- * written to, or an IO error occurs during copying.
- *
- * @throws FileNotFoundException if <code>destination</code> is a directory
- * (use {@link #copyFileToDirectory}).
- */
- public static void copyFile(File source, File destination, boolean preserveFileDate)
- throws IOException {
- //check source exists
- if (!source.exists()) {
- String message = "File " + source + " does not exist";
- throw new FileNotFoundException(message);
- }
-
- //does destinations directory exist ?
- if (destination.getParentFile() != null
- && !destination.getParentFile().exists()) {
- destination.getParentFile().mkdirs();
- }
-
- //make sure we can write to destination
- if (destination.exists() && !destination.canWrite()) {
- String message =
- "Unable to open file " + destination + " for writing.";
- throw new IOException(message);
- }
-
- //makes sure it is not the same file
- if (source.getCanonicalPath().equals(destination.getCanonicalPath())) {
- String message =
- "Unable to write file " + source + " on itself.";
- throw new IOException(message);
- }
-
- FileInputStream input = new FileInputStream(source);
- try {
- FileOutputStream output = new FileOutputStream(destination);
- try {
- CopyUtils.copy(input, output);
- } finally {
- IOUtils.closeQuietly(output);
- }
- } finally {
- IOUtils.closeQuietly(input);
- }
-
- if (source.length() != destination.length()) {
- String message =
- "Failed to copy full contents from "
- + source
- + " to "
- + destination;
- throw new IOException(message);
- }
-
- if (preserveFileDate) {
- //file copy should preserve file date
- destination.setLastModified(source.lastModified());
- }
- }
-
- /**
- * Copies bytes from the URL <code>source</code> to a file <code>destination</code>.
- * The directories up to <code>destination</code> will be created if they don't already exist.
- * <code>destination</code> will be overwritten if it already exists.
- *
- * @param source A <code>URL</code> to copy bytes from.
- * @param destination A non-directory <code>File</code> to write bytes to (possibly
- * overwriting).
- *
- * @throws IOException if
- * <ul>
- * <li><code>source</code> URL cannot be opened</li>
- * <li><code>destination</code> cannot be written to</li>
- * <li>an IO error occurs during copying</li>
- * </ul>
- */
- public static void copyURLToFile(URL source, File destination)
- throws IOException {
- //does destination directory exist ?
- if (destination.getParentFile() != null
- && !destination.getParentFile().exists()) {
- destination.getParentFile().mkdirs();
- }
-
- //make sure we can write to destination
- if (destination.exists() && !destination.canWrite()) {
- String message =
- "Unable to open file " + destination + " for writing.";
- throw new IOException(message);
- }
-
- InputStream input = source.openStream();
- try {
- FileOutputStream output = new FileOutputStream(destination);
- try {
- CopyUtils.copy(input, output);
- } finally {
- IOUtils.closeQuietly(output);
- }
- } finally {
- IOUtils.closeQuietly(input);
- }
- }
-
-
- /**
- * Recursively delete a directory.
- * @param directory directory to delete
- * @throws IOException in case deletion is unsuccessful
- */
- public static void deleteDirectory(File directory)
- throws IOException {
- if (!directory.exists()) {
- return;
- }
-
- cleanDirectory(directory);
- if (!directory.delete()) {
- String message =
- "Unable to delete directory " + directory + ".";
- throw new IOException(message);
- }
- }
-
- /**
- * Clean a directory without deleting it.
- * @param directory directory to clean
- * @throws IOException in case cleaning is unsuccessful
- */
- public static void cleanDirectory(File directory)
- throws IOException {
- if (!directory.exists()) {
- String message = directory + " does not exist";
- throw new IllegalArgumentException(message);
- }
-
- if (!directory.isDirectory()) {
- String message = directory + " is not a directory";
- throw new IllegalArgumentException(message);
- }
-
- IOException exception = null;
-
- File[] files = directory.listFiles();
- for (int i = 0; i < files.length; i++) {
- File file = files[i];
- try {
- forceDelete(file);
- } catch (IOException ioe) {
- exception = ioe;
- }
- }
-
- if (null != exception) {
- throw exception;
- }
- }
-
- /**
- * Waits for NFS to propagate a file creation, imposing a timeout.
- *
- * @param file The file
- * @param seconds The maximum time in seconds to wait.
- * @return True if file exists.
- * TODO Needs a clearer javadoc to see its real purpose for someone without
- * NFS-knowledge.
- */
- public static boolean waitFor(File file, int seconds) {
- int timeout = 0;
- int tick = 0;
- while (!file.exists()) {
- if (tick++ >= 10) {
- tick = 0;
- if (timeout++ > seconds) {
- return false;
- }
- }
- try {
- Thread.sleep(100);
- } catch (InterruptedException ignore) {} catch (Exception ex) {
- break;
- }
- }
- return true;
- }
-
-
- /**
- * <p>
- * Reads the contents of a file into a String.
- * </p>
- * <p>
- * There is no readFileToString method without encoding parameter because
- * the default encoding can differ between platforms and therefore results
- * in inconsistent results.
- * </p>
- *
- * @param file the file to read.
- * @param encoding the encoding to use
- * @return The file contents or null if read failed.
- * @throws IOException in case of an I/O error
- * @throws UnsupportedEncodingException if the encoding is not supported
- * by the VM
- */
- public static String readFileToString(
- File file, String encoding) throws IOException {
- InputStream in = new java.io.FileInputStream(file);
- try {
- return IOUtils.toString(in, encoding);
- } finally {
- IOUtils.closeQuietly(in);
- }
- }
-
- /**
- * <p>
- * Writes data to a file. The file will be created if it does not exist.
- * </p>
- * <p>
- * There is no readFileToString method without encoding parameter because
- * the default encoding can differ between platforms and therefore results
- * in inconsistent results.
- * </p>
- *
- * @param file the file to write.
- * @param data The content to write to the file.
- * @param encoding encoding to use
- * @throws IOException in case of an I/O error
- * @throws UnsupportedEncodingException if the encoding is not supported
- * by the VM
- */
- public static void writeStringToFile(File file,
- String data, String encoding) throws IOException {
- OutputStream out = new java.io.FileOutputStream(file);
- try {
- out.write(data.getBytes(encoding));
- } finally {
- IOUtils.closeQuietly(out);
- }
- }
-
- /**
- * <p>
- * Delete a file. If file is a directory, delete it and all sub-directories.
- * </p>
- * <p>
- * The difference between File.delete() and this method are:
- * </p>
- * <ul>
- * <li>A directory to be deleted does not have to be empty.</li>
- * <li>You get exceptions when a file or directory cannot be deleted.
- * (java.io.File methods returns a boolean)</li>
- * </ul>
- * @param file file or directory to delete.
- * @throws IOException in case deletion is unsuccessful
- */
- public static void forceDelete(File file) throws IOException {
- if (file.isDirectory()) {
- deleteDirectory(file);
- } else {
- if (!file.exists()) {
- throw new FileNotFoundException("File does not exist: " + file);
- }
- if (!file.delete()) {
- String message =
- "Unable to delete file: " + file;
- throw new IOException(message);
- }
- }
- }
-
- /**
- * Schedule a file to be deleted when JVM exits.
- * If file is directory delete it and all sub-directories.
- * @param file file or directory to delete.
- * @throws IOException in case deletion is unsuccessful
- */
- public static void forceDeleteOnExit(File file) throws IOException {
- if (file.isDirectory()) {
- deleteDirectoryOnExit(file);
- } else {
- file.deleteOnExit();
- }
- }
-
- /**
- * Recursively schedule directory for deletion on JVM exit.
- * @param directory directory to delete.
- * @throws IOException in case deletion is unsuccessful
- */
- private static void deleteDirectoryOnExit(File directory)
- throws IOException {
- if (!directory.exists()) {
- return;
- }
-
- cleanDirectoryOnExit(directory);
- directory.deleteOnExit();
- }
-
- /**
- * Clean a directory without deleting it.
- * @param directory directory to clean.
- * @throws IOException in case cleaning is unsuccessful
- */
- private static void cleanDirectoryOnExit(File directory)
- throws IOException {
- if (!directory.exists()) {
- String message = directory + " does not exist";
- throw new IllegalArgumentException(message);
- }
-
- if (!directory.isDirectory()) {
- String message = directory + " is not a directory";
- throw new IllegalArgumentException(message);
- }
-
- IOException exception = null;
-
- File[] files = directory.listFiles();
- for (int i = 0; i < files.length; i++) {
- File file = files[i];
- try {
- forceDeleteOnExit(file);
- } catch (IOException ioe) {
- exception = ioe;
- }
- }
-
- if (null != exception) {
- throw exception;
- }
- }
-
-
- /**
- * Make a directory. If there already exists a file with specified name or
- * the directory cannot be created then an exception is thrown.
- * @param directory directory to create
- * @throws IOException if the directory cannot be created.
- */
- public static void forceMkdir(File directory) throws IOException {
- if (directory.exists()) {
- if (directory.isFile()) {
- String message =
- "File "
- + directory
- + " exists and is "
- + "not a directory. Unable to create directory.";
- throw new IOException(message);
- }
- } else {
- if (false == directory.mkdirs()) {
- String message =
- "Unable to create directory " + directory;
- throw new IOException(message);
- }
- }
- }
-
- /**
- * Recursively count size of a directory (sum of the length of all files).
- *
- * @param directory directory to inspect
- * @return size of directory in bytes.
- */
- public static long sizeOfDirectory(File directory) {
- if (!directory.exists()) {
- String message = directory + " does not exist";
- throw new IllegalArgumentException(message);
- }
-
- if (!directory.isDirectory()) {
- String message = directory + " is not a directory";
- throw new IllegalArgumentException(message);
- }
-
- long size = 0;
-
- File[] files = directory.listFiles();
- for (int i = 0; i < files.length; i++) {
- File file = files[i];
-
- if (file.isDirectory()) {
- size += sizeOfDirectory(file);
- } else {
- size += file.length();
- }
- }
-
- return size;
- }
-
- /**
- * Tests if the specified <code>File</code> is newer than the reference
- * <code>File</code>.
- *
- * @param file the <code>File</code> of which the modification date must be compared
- * @param reference the <code>File</code> of which the modification date is used
- * like reference
- * @return true if the <code>File</code> exists and has been modified more recently
- * than the reference <code>File</code>.
- */
- public static boolean isFileNewer(File file, File reference) {
- if (reference == null) {
- throw new IllegalArgumentException("No specified reference file");
- }
- if (!reference.exists()) {
- throw new IllegalArgumentException("The reference file '" + file + "' doesn't exist");
- }
-
- return isFileNewer(file, reference.lastModified());
- }
-
- /**
- * Tests if the specified <code>File</code> is newer than the specified
- * <code>Date</code>
- *
- * @param file the <code>File</code> of which the modification date must be compared
- * @param date the date reference
- * @return true if the <code>File</code> exists and has been modified after
- * the given <code>Date</code>.
- */
- public static boolean isFileNewer(File file, Date date) {
- if (date == null) {
- throw new IllegalArgumentException("No specified date");
- }
- return isFileNewer(file, date.getTime());
- }
-
- /**
- * Tests if the specified <code>File</code> is newer than the specified
- * time reference.
- *
- * @param file the <code>File</code> of which the modification date must be compared.
- * @param timeMillis the time reference measured in milliseconds since the epoch
- * (00:00:00 GMT, January 1, 1970)
- * @return true if the <code>File</code> exists and has been modified after
- * the given time reference.
- */
- public static boolean isFileNewer(File file, long timeMillis) {
- if (file == null) {
- throw new IllegalArgumentException("No specified file");
- }
- if (!file.exists()) {
- return false;
- }
-
- return file.lastModified() > timeMillis;
- }
-
- }