Example usage for java.io FileOutputStream getChannel

Introduction

In this page you can find the example usage for java.io FileOutputStream getChannel.

Prototype

public FileChannel getChannel() 

Source Link

Document

Returns the unique java.nio.channels.FileChannel FileChannel object associated with this file output stream.

Usage

From source file:net.librec.util.FileUtil.java

/**
 * fast file copy/*  w w  w  .j a v  a 2 s .c  o m*/
 *
 * @param source source file
 * @param target target file
 * @throws Exception if error occurs
 */
public static void copyFile(File source, File target) throws Exception {

    FileInputStream fis = new FileInputStream(source);
    FileOutputStream fos = new FileOutputStream(target);
    FileChannel inChannel = fis.getChannel();
    FileChannel outChannel = fos.getChannel();

    // inChannel.transferTo(0, inChannel.size(), outChannel);
    // original -- apparently has trouble copying large files on Windows

    // magic number for Windows, 64Mb - 32Kb
    int maxCount = (64 * 1024 * 1024) - (32 * 1024);
    long size = inChannel.size();
    long position = 0;
    while (position < size) {
        position += inChannel.transferTo(position, maxCount, outChannel);
    }

    inChannel.close();
    outChannel.close();
    fis.close();
    fos.close();
}

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From source file:org.mule.util.FileUtils.java

public static boolean renameFileHard(File srcFile, File destFile) {
    boolean isRenamed = false;
    if (srcFile != null && destFile != null) {
        logger.debug("Moving file " + srcFile.getAbsolutePath() + " to " + destFile.getAbsolutePath());
        if (!destFile.exists()) {
            try {
                if (srcFile.isFile()) {
                    logger.debug("Trying to rename file");
                    FileInputStream in = null;
                    FileOutputStream out = null;
                    try {
                        in = new FileInputStream(srcFile);
                        out = new FileOutputStream(destFile);
                        out.getChannel().transferFrom(in.getChannel(), 0, srcFile.length());
                        isRenamed = true;
                    } catch (Exception e) {
                        logger.debug(e);
                    } finally {
                        if (in != null) {
                            try {
                                in.close();
                            } catch (Exception inNotClosed) {
                                logger.debug(inNotClosed);
                            }/*from w w w . j a va 2  s  .  com*/
                        }
                        if (out != null) {
                            try {
                                out.close();
                            } catch (Exception outNotClosed) {
                                logger.debug(outNotClosed);
                            }
                        }
                    }
                    logger.debug("File renamed: " + isRenamed);
                    if (isRenamed) {
                        srcFile.delete();
                    } else {
                        destFile.delete();
                    }
                } else {
                    logger.debug(srcFile.getAbsolutePath() + " is not a valid file.");
                }
            } catch (Exception e) {
                logger.debug("Error renaming file from " + srcFile.getAbsolutePath() + " to "
                        + destFile.getAbsolutePath());
            }
        } else {
            logger.debug("Error renaming file " + srcFile.getAbsolutePath() + ". Destination file "
                    + destFile.getAbsolutePath() + " already exists.");
        }
    }
    return isRenamed;
}

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From source file:com.dmbstream.android.util.Util.java

public static void atomicCopy(File from, File to) throws IOException {
    FileInputStream in = null;/*from  ww  w  . j av a  2s  . co m*/
    FileOutputStream out = null;
    File tmp = null;
    try {
        tmp = new File(to.getPath() + ".tmp");
        in = new FileInputStream(from);
        out = new FileOutputStream(tmp);
        in.getChannel().transferTo(0, from.length(), out.getChannel());
        out.close();
        if (!tmp.renameTo(to)) {
            throw new IOException("Failed to rename " + tmp + " to " + to);
        }
        Log.i(TAG, "Copied " + from + " to " + to);
    } catch (IOException x) {
        close(out);
        delete(to);
        throw x;
    } finally {
        close(in);
        close(out);
        delete(tmp);
    }
}

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From source file:syndeticlogic.catena.utility.FixedLengthArrayGenerator.java

public void generateFileArray() throws Exception {
    file = new File(filename);
    FileOutputStream out = new FileOutputStream(file);
    out.getChannel().truncate(0);
    out.flush();/*from  w w  w  . j a  v  a 2 s  .  co m*/

    Random localRandom = new Random(seed);

    for (int i = 0; i < elementLength; i++) {
        byte[] buffer = new byte[elementSize];
        localRandom.nextBytes(buffer);
        out.write(buffer);
        out.flush();
        if (log.isTraceEnabled()) {
            System.out.println("generate file " + i
                    + " ===================================================================");
            for (int k = 0; k < buffer.length; k++) {
                System.out.print((Integer.toHexString((int) buffer[k] & 0xff)) + ", ");
            }
            System.out.println();
        }
    }
    out.close();
}

---

From source file:com.hazelcast.simulator.boot.SimulatorInstaller.java

void install() {
    File simulatorHome = new File(FileUtils.getUserHomePath(), "hazelcast-simulator-" + version);
    System.setProperty("SIMULATOR_HOME", simulatorHome.getAbsolutePath());

    System.out.println("Installing Simulator: " + version);

    File userHome = getUserHome();
    try {//from  w w  w  . j a v  a 2 s  .  c  om
        if (version.endsWith("SNAPSHOT")) {
            File archive = new File(
                    format("%s/.m2/repository/com/hazelcast/simulator/dist/%s/dist-%s-dist.tar.gz", userHome,
                            version, version));

            if (archive.exists()) {
                simulatorHome.delete();
                decompress(archive);
            } else if (!simulatorHome.exists()) {
                throw new IllegalStateException(
                        "Could not install simulator, archive: " + archive.getAbsolutePath() + " not found");
            }
        } else if (!simulatorHome.exists()) {
            File archive = new File(getUserHome(), format("hazelcast-simulator-%s-dist.tar.gz", version));

            URL url = new URL(format(
                    "http://repo1.maven.org/maven2/" + "com/hazelcast/simulator/dist/%s/dist-%s-dist.tar.gz",
                    version, version));
            ReadableByteChannel rbc = Channels.newChannel(url.openStream());
            System.out.printf("File [%s] doesn't exist; downloading\n", archive.getAbsolutePath());
            FileOutputStream fos = new FileOutputStream(archive);
            fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);

            decompress(archive);
            archive.delete();
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

---

From source file:org.mule.util.FileUtils.java

/** 
 * Try to move a file by renaming with backup attempt by copying/deleting via NIO.
 * Creates intermidiate directories as required.
 *///from  w w w  .j a va  2s. c  om
public static boolean moveFileWithCopyFallback(File sourceFile, File destinationFile) {
    // try fast file-system-level move/rename first
    boolean success = sourceFile.renameTo(destinationFile);

    if (!success) {
        // try again using NIO copy
        FileInputStream fis = null;
        FileOutputStream fos = null;
        try {
            fis = new FileInputStream(sourceFile);
            if (!destinationFile.exists()) {
                FileUtils.createFile(destinationFile.getPath());
            }
            fos = new FileOutputStream(destinationFile);
            FileChannel srcChannel = fis.getChannel();
            FileChannel dstChannel = fos.getChannel();
            dstChannel.transferFrom(srcChannel, 0, srcChannel.size());
            srcChannel.close();
            dstChannel.close();
            success = sourceFile.delete();
        } catch (IOException ioex) {
            // grr!
            success = false;
        } finally {
            IOUtils.closeQuietly(fis);
            IOUtils.closeQuietly(fos);
        }
    }

    return success;
}

---

From source file:org.jodconverter.job.SourceDocumentSpecsFromInputStream.java

@Override
public File getFile() {

    // Write the InputStream to the temp file
    final File tempFile = Optional.ofNullable(getFormat())
            .map(format -> fileMaker.makeTemporaryFile(format.getExtension())).orElse(super.getFile());
    try {//  w  w w.ja va 2  s. c  om
        final FileOutputStream outputStream = new FileOutputStream(tempFile); // NOSONAR
        outputStream.getChannel().lock();
        try {
            IOUtils.copy(inputStream, outputStream);
            return tempFile;
        } finally {
            // Note: This will implicitly release the file lock.
            outputStream.close();
        }
    } catch (IOException ex) {
        throw new DocumentSpecsIOException("Could not write stream to file " + tempFile, ex);
    }
}

---

From source file:updater.Updater.java

@SuppressWarnings("resource")
public Updater() {
    try {/*from   w  w  w .  j  av a  2s.c o m*/
        System.out.println("Checking for updates...");
        URL url1 = new URL(
                "https://raw.githubusercontent.com/kvsjxd/Droid-PC-Suite/master/.release-version.txt");
        ReadableByteChannel obj1 = Channels.newChannel(url1.openStream());
        FileOutputStream outputstream1 = new FileOutputStream(".release-version.txt");
        outputstream1.getChannel().transferFrom(obj1, 0, Long.MAX_VALUE);
        FileReader file = new FileReader(".release-version.txt");
        BufferedReader reader = new BufferedReader(file);
        String DownloadedString = reader.readLine();
        File file2 = new File(".release-version.txt");
        if (file2.exists() && !file2.isDirectory()) {
            file2.delete();
        }
        double AvailableUpdate = Double.parseDouble(DownloadedString);
        InputStreamReader reader2 = new InputStreamReader(
                getClass().getResourceAsStream("/others/app-version.txt"));
        String tmp = IOUtils.toString(reader2);
        double ApplicationVersion = Double.parseDouble(tmp);
        if (AvailableUpdate > ApplicationVersion) {
            System.out.println("Your Droid PC Suite version: V" + ApplicationVersion);
            System.out.println(
                    "New update V" + AvailableUpdate + " is available! Please download latest version now!");
            URL url2 = new URL(
                    "https://raw.githubusercontent.com/kvsjxd/Droid-PC-Suite/master/.release-changelog.txt");
            ReadableByteChannel obj2 = Channels.newChannel(url2.openStream());
            FileOutputStream outputstream2 = new FileOutputStream(".release-changelog.txt");
            outputstream2.getChannel().transferFrom(obj2, 0, Long.MAX_VALUE);
            UpdaterGUI obj = new UpdaterGUI();
            obj.setVisible(true);
        } else {
            System.out.println("You are running latest Droid PC Suite...");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:util.io.IOUtilities.java

/**
 * Copies a file./*from   w  w  w  . ja  v  a2  s.co m*/
 *
 * @param src The file to read from
 * @param target The file to write to
 * @param onlyNew Overwrite only older files.
 * @throws IOException If copying failed
 * @since 2.2.2/2.5.1
 */
public static void copy(File src, File target, boolean onlyNew) throws IOException {
    BufferedInputStream in = null;
    BufferedOutputStream out = null;
    try {
        FileOutputStream outFile = new FileOutputStream(target);
        in = new BufferedInputStream(new FileInputStream(src), 0x4000);
        out = new BufferedOutputStream(outFile, 0x4000);

        if (!onlyNew || target.length() < 1 || (src.lastModified() > target.lastModified())) {
            outFile.getChannel().truncate(0);
            pipeStreams(in, out);
        }

        in.close();
        out.close();
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (IOException exc) {
            }
        }
        if (out != null) {
            try {
                out.close();
            } catch (IOException exc) {
            }
        }
    }
}

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From source file:org.sonarsource.sonarlint.core.plugin.DefaultPluginJarExploder.java

private File unzipFile(File cachedFile) throws IOException {
    String filename = cachedFile.getName();
    File destDir = new File(cachedFile.getParentFile(), filename + "_unzip");
    if (!destDir.exists()) {
        File lockFile = new File(cachedFile.getParentFile(), filename + "_unzip.lock");
        FileOutputStream out = new FileOutputStream(lockFile);
        try {//from  w  w w .jav  a2  s.  co  m
            FileLock lock = out.getChannel().lock();
            try {
                // Recheck in case of concurrent processes
                if (!destDir.exists()) {
                    Path tempDir = fileCache.createTempDir();
                    ZipUtils.unzip(cachedFile, tempDir.toFile(), newLibFilter());
                    FileUtils.moveDirectory(tempDir.toFile(), destDir);
                }
            } finally {
                lock.release();
            }
        } finally {
            out.close();
            FileUtils.deleteQuietly(lockFile);
        }
    }
    return destDir;
}

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