Example usage for java.nio.channels FileChannel size

List of usage examples for java.nio.channels FileChannel size

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  6. size

Introduction

In this page you can find the example usage for java.nio.channels FileChannel size.

Prototype

public abstract long size() throws IOException;

Source Link

Document

Returns the current size of this channel's file.

Usage

From source file:de.baumann.quitsmoking.fragments.FragmentNotes.java

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    int id = item.getItemId();

    if (id == R.id.action_backup) {

        final CharSequence[] options = { getString(R.string.action_backup), getString(R.string.action_restore),
                getString(R.string.action_delete) };

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setItems(options, new DialogInterface.OnClickListener() {
            @Override/*from w  ww. j  a va  2  s.c o m*/
            public void onClick(DialogInterface dialog, int item) {
                if (options[item].equals(getString(R.string.action_backup))) {

                    sharedPref.edit().putString("sortDB", "title").apply();
                    setNotesList();

                    File directory = new File(
                            Environment.getExternalStorageDirectory() + "/QuitSmoking/backup/");
                    if (!directory.exists()) {
                        //noinspection ResultOfMethodCallIgnored
                        directory.mkdirs();
                    }

                    try {
                        File sd = Environment.getExternalStorageDirectory();
                        File data = Environment.getDataDirectory();

                        if (sd.canWrite()) {

                            String currentDBPath2 = "//data//" + "de.baumann.quitsmoking" + "//databases//"
                                    + "notes.db";
                            String backupDBPath2 = "//QuitSmoking//" + "//backup//" + "notes.db";
                            File currentDB2 = new File(data, currentDBPath2);
                            File backupDB2 = new File(sd, backupDBPath2);

                            FileChannel src2 = new FileInputStream(currentDB2).getChannel();
                            FileChannel dst2 = new FileOutputStream(backupDB2).getChannel();
                            dst2.transferFrom(src2, 0, src2.size());
                            src2.close();
                            dst2.close();

                            Snackbar snackbar = Snackbar.make(listView, R.string.toast_backup,
                                    Snackbar.LENGTH_LONG);
                            snackbar.show();
                        }
                    } catch (Exception e) {
                        Snackbar snackbar = Snackbar.make(listView, R.string.toast_backup_not,
                                Snackbar.LENGTH_LONG);
                        snackbar.show();
                    }
                }

                if (options[item].equals(getString(R.string.action_restore))) {

                    sharedPref.edit().putString("sortDB", "seqno").apply();
                    setNotesList();

                    try {
                        File sd = Environment.getExternalStorageDirectory();
                        File data = Environment.getDataDirectory();

                        if (sd.canWrite()) {

                            String currentDBPath2 = "//data//" + "de.baumann.quitsmoking" + "//databases//"
                                    + "notes.db";
                            String backupDBPath2 = "//QuitSmoking//" + "//backup//" + "notes.db";
                            File currentDB2 = new File(data, currentDBPath2);
                            File backupDB2 = new File(sd, backupDBPath2);

                            FileChannel src2 = new FileInputStream(backupDB2).getChannel();
                            FileChannel dst2 = new FileOutputStream(currentDB2).getChannel();
                            dst2.transferFrom(src2, 0, src2.size());
                            src2.close();
                            dst2.close();
                            Snackbar snackbar = Snackbar.make(listView, R.string.toast_restore,
                                    Snackbar.LENGTH_LONG);
                            snackbar.show();
                            setNotesList();
                        }
                    } catch (Exception e) {
                        Snackbar snackbar = Snackbar.make(listView, R.string.toast_restore_not,
                                Snackbar.LENGTH_LONG);
                        snackbar.show();
                    }
                }

                if (options[item].equals(getString(R.string.action_delete))) {

                    sharedPref.edit().putString("sortDB", "icon").apply();
                    setNotesList();

                    Snackbar snackbar = Snackbar
                            .make(listView, R.string.note_delete_confirmation, Snackbar.LENGTH_LONG)
                            .setAction(R.string.yes, new View.OnClickListener() {
                                @Override
                                public void onClick(View view) {
                                    getActivity().deleteDatabase("notes.db");
                                    setNotesList();
                                }
                            });
                    snackbar.show();
                }
            }
        });
        builder.setPositiveButton(R.string.goal_cancel, new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int whichButton) {
                dialog.dismiss();
            }
        });
        builder.show();
    }

    if (id == R.id.action_sort) {

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        View dialogView = View.inflate(getActivity(), R.layout.dialog_sort, null);

        final CheckBox ch_title = (CheckBox) dialogView.findViewById(R.id.checkBoxTitle);
        final CheckBox ch_create = (CheckBox) dialogView.findViewById(R.id.checkBoxCreate);
        final CheckBox ch_edit = (CheckBox) dialogView.findViewById(R.id.checkBoxEdit);
        final CheckBox ch_icon = (CheckBox) dialogView.findViewById(R.id.checkBoxIcon);
        final CheckBox ch_att = (CheckBox) dialogView.findViewById(R.id.checkBoxAtt);

        if (sharedPref.getString("sortDB", "title").equals("title")) {
            ch_title.setChecked(true);
        } else {
            ch_title.setChecked(false);
        }
        if (sharedPref.getString("sortDB", "title").equals("create")) {
            ch_create.setChecked(true);
        } else {
            ch_create.setChecked(false);
        }
        if (sharedPref.getString("sortDB", "title").equals("seqno")) {
            ch_edit.setChecked(true);
        } else {
            ch_edit.setChecked(false);
        }
        if (sharedPref.getString("sortDB", "title").equals("icon")) {
            ch_icon.setChecked(true);
        } else {
            ch_icon.setChecked(false);
        }
        if (sharedPref.getString("sortDB", "title").equals("attachment")) {
            ch_att.setChecked(true);
        } else {
            ch_att.setChecked(false);
        }

        ch_title.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    ch_create.setChecked(false);
                    ch_edit.setChecked(false);
                    ch_icon.setChecked(false);
                    ch_att.setChecked(false);
                    sharedPref.edit().putString("sortDB", "title").apply();
                    setNotesList();
                }
            }
        });
        ch_create.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    ch_edit.setChecked(false);
                    ch_icon.setChecked(false);
                    ch_title.setChecked(false);
                    ch_att.setChecked(false);
                    sharedPref.edit().putString("sortDB", "create").apply();
                    setNotesList();
                }
            }
        });
        ch_edit.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    ch_create.setChecked(false);
                    ch_icon.setChecked(false);
                    ch_title.setChecked(false);
                    ch_att.setChecked(false);
                    sharedPref.edit().putString("sortDB", "seqno").apply();
                    setNotesList();
                }
            }
        });
        ch_icon.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    ch_create.setChecked(false);
                    ch_edit.setChecked(false);
                    ch_title.setChecked(false);
                    ch_att.setChecked(false);
                    sharedPref.edit().putString("sortDB", "icon").apply();
                    setNotesList();
                }
            }
        });
        ch_att.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    ch_create.setChecked(false);
                    ch_edit.setChecked(false);
                    ch_title.setChecked(false);
                    ch_icon.setChecked(false);
                    sharedPref.edit().putString("sortDB", "attachment").apply();
                    setNotesList();
                }
            }
        });

        builder.setView(dialogView);
        builder.setTitle(R.string.action_sort);
        builder.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int whichButton) {
                dialog.dismiss();
            }
        });

        final AlertDialog dialog2 = builder.create();
        // Display the custom alert dialog on interface
        dialog2.show();
        return true;
    }

    if (id == R.id.action_note) {
        Date date = new Date();
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault());

        String dateCreate = format.format(date);
        sharedPref.edit().putString("handleTextCreate", dateCreate).apply();

        helper_notes.editNote(getActivity());

    }

    return super.onOptionsItemSelected(item);
}

From source file:org.wso2.esb.integration.common.utils.ESBTestCaseUtils.java

/**
 * Copy the given source file to the given destination
 *
 * @param sourceUri source file location
 * @param destUri   destination file location
 * @throws IOException// ww w  . j  a  v a 2  s  .  c om
 */
public static void copyFile(String sourceUri, String destUri) throws IOException {
    File sourceFile = new File(sourceUri);
    File destFile = new File(destUri);

    if (destFile.exists()) {
        destFile.delete();
    }
    destFile.createNewFile();
    FileInputStream fileInputStream = null;
    FileOutputStream fileOutputStream = null;

    try {
        fileInputStream = new FileInputStream(sourceFile);
        fileOutputStream = new FileOutputStream(destFile);

        FileChannel source = fileInputStream.getChannel();
        FileChannel destination = fileOutputStream.getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        IOUtils.closeQuietly(fileInputStream);
        IOUtils.closeQuietly(fileOutputStream);
    }
}

From source file:eu.optimis.vc.api.IsoCreator.IsoImageCreation.java

private void storeAgents(File scriptsDirectory) {
    if (virtualMachine.isHasIPS() || virtualMachine.isHasBTKey() || virtualMachine.isHasVPNKey()) {
        LOGGER.debug("Adding agents to ISO");

        // Add the agent tar ball
        String agentsTarBallName = "vpn.tar.gz";
        // Agents tar ball source
        File agentsTarBallFileSource = new File(
                configuration.getAgentsDirectory() + File.separator + agentsTarBallName);
        LOGGER.debug("agentsTarBallFileSource is: " + agentsTarBallFileSource.getPath());
        // Destination folder
        File agentsIsoDirectory = new File(isoDataDirectory + File.separator + "agents");
        agentsIsoDirectory.mkdirs();/*from  w  w  w  . j  a v  a 2s .c  o  m*/
        LOGGER.debug("agentsIsoDirectory is: " + agentsIsoDirectory.getPath());
        // Agents tar ball destination
        File agentsTarBallFileDestination = new File(agentsIsoDirectory + File.separator + agentsTarBallName);
        LOGGER.debug("agentsTarBallFileDestination is: " + agentsTarBallFileDestination.getPath());

        // Copy the file to the iso directory
        LOGGER.debug("Copying agent file to ISO directory...");
        FileChannel source = null;
        FileChannel destination = null;
        try {
            if (!agentsTarBallFileDestination.exists()) {
                agentsTarBallFileDestination.createNewFile();
            }
            source = new FileInputStream(agentsTarBallFileSource).getChannel();
            destination = new FileOutputStream(agentsTarBallFileDestination).getChannel();
            destination.transferFrom(source, 0, source.size());
            LOGGER.debug(
                    "Copied agent file to ISO directory, size is : " + agentsTarBallFileDestination.length());
            agentsTarBallFileDestination.getTotalSpace();
        } catch (IOException e) {
            LOGGER.error(
                    "Failed to create agents tar ball with path: " + agentsTarBallFileDestination.getPath(), e);
        } finally {
            if (source != null) {
                try {
                    source.close();
                } catch (IOException e) {
                    LOGGER.error("Failed to close source agents tar ball file with path: "
                            + agentsTarBallFileSource.getPath(), e);
                }
            }
            if (destination != null) {
                try {
                    destination.close();
                } catch (IOException e) {
                    LOGGER.error("Failed to close destination agents tar ball file with path: "
                            + agentsTarBallFileDestination.getPath(), e);
                }
            }
        }

        // Add the agent script
        File agentsFile = new File(scriptsDirectory + File.separator + "agents.sh");
        try {
            LOGGER.debug(ATTEMPTING_TO_CREATE_FILE + agentsFile.getPath());
            agentsFile.createNewFile();
            LOGGER.debug(CREATED_FILE + agentsFile.getPath());

            // TODO: This should be stored somewhere else and not hardcoded
            // Mount location is currently hard coded in the init.d scripts
            // of the base VM /mnt/context/
            String agentsScript = "#!/bin/bash\n" + "#Setup environment\n" + "touch /var/lock/subsys/local\n"
                    + "source /etc/profile\n" + "\n"
                    + "#Extract the agent from the ISO agent directory to /opt/optimis/vpn/\n"
                    + "mkdir -p /opt/optimis\n" + "tar zxvf /mnt/context/agents/" + agentsTarBallName
                    + " -C /opt/optimis/\n" + "chmod -R 777 /opt/optimis/vpn\n" + "\n"
                    + "#Install and start the agents\n" + "\n";

            // Add VPN install and init script to
            // /mnt/context/scripts/agents.sh
            if (virtualMachine.isHasIPS()) {
                agentsScript += "#IPS\n" + "/opt/optimis/vpn/IPS_Meta.sh\n"
                        + "/bin/date > /opt/optimis/vpn/dsa.log\n" + "\n";
            }

            // Add VPN install and init script to
            // /mnt/context/scripts/agents.sh ?

            // KMS
            if (virtualMachine.isHasBTKey()) {
                agentsScript += "#KMS\n" + "/opt/optimis/vpn/KMS_Meta.sh\n"
                        + "/bin/date >> /opt/optimis/vpn/scagent.log\n" + "\n";
            }

            // Add VPN install and init script to
            // /mnt/context/scripts/agents.sh
            if (virtualMachine.isHasVPNKey()) {
                agentsScript += "#VPN\n" + "/opt/optimis/vpn/VPN_Meta.sh\n";
            }

            // Write out the agents file
            FileOutputStream fos = new FileOutputStream(agentsFile.getPath());
            fos.write(agentsScript.getBytes());
            fos.close();
            LOGGER.debug("Writing agents script complete!");

        } catch (IOException e) {
            LOGGER.error("Failed to create agents script file with path: " + agentsFile.getPath(), e);
        }
    } else {
        LOGGER.debug("Agents not not needed by service!");
    }

}

From source file:org.pentaho.platform.repository.solution.SolutionRepositoryBase.java

/**
 * @return int possible values: ISolutionRepository.FILE_ADD_SUCCESSFUL ISolutionRepository.FILE_EXISTS ISolutionRepository.FILE_ADD_FAILED
 * /*ww  w  .  j  ava 2  s .  c om*/
 * TODO mlowery Why can't this delegate to the other addSolutionFile?
 */
public int addSolutionFile(final String baseUrl, String path, final String fileName, final File f,
        boolean overwrite) {
    if (!path.endsWith("/") && !path.endsWith("\\")) { //$NON-NLS-1$ //$NON-NLS-2$
        path += File.separator;
    }
    File fNew = new File(baseUrl + path + fileName);
    int status = ISolutionRepository.FILE_ADD_SUCCESSFUL;
    if (fNew.exists() && !overwrite) {
        status = ISolutionRepository.FILE_EXISTS;
    } else {
        FileChannel in = null, out = null;
        try {
            in = new FileInputStream(f).getChannel();
            out = new FileOutputStream(fNew).getChannel();
            out.transferFrom(in, 0, in.size());
            resetRepository();
        } catch (Exception e) {
            SolutionRepositoryBase.logger.error(e.toString());
            status = ISolutionRepository.FILE_ADD_FAILED;
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
                if (out != null) {
                    out.close();
                }
            } catch (Exception e) {
                // TODO, we should probably log the error, and return a failure status
            }
        }
    }
    return status;
}

From source file:configuration.Util.java

/** Fast & simple file copy. */
public static void copy(File source, File dest) throws IOException {
    FileChannel in = null, out = null;
    try {//from  w w w . j av a 2s.com
        in = new FileInputStream(source).getChannel();
        out = new FileOutputStream(dest).getChannel();

        long size = in.size();
        MappedByteBuffer buf = in.map(FileChannel.MapMode.READ_ONLY, 0, size);

        out.write(buf);

    } catch (Exception e) {
        System.out.println("Copy File Directory Failed!");
        System.out.println(e);
    }
    if (in != null)
        in.close();
    if (out != null)
        out.close();
}

From source file:adept.io.Reader.java

/**
 * Reads specified file into a string./*from  ww w  . j ava 2s  . c  om*/
 *
 * @param path the path
 * @return the string
 */
public String readFileIntoString(String path) {
    try {
        String absolutePath = path;
        //         String absolutePath = getAbsolutePathFromClasspathOrFileSystem(path);
        FileInputStream stream = new FileInputStream(new File(absolutePath));
        try {
            FileChannel fc = stream.getChannel();
            MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
            /* Instead of using default, pass in a decoder. */
            return Charset.forName("UTF-8").decode(bb).toString();
        } finally {
            stream.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:com.alu.e3.logger.LogCollector.java

/**
 * Copy a file from one location to another on the localhost, first moving
 * (renaming) the source file out of the way of any rotator process, and
 * then optionally deleting the source file after a successful copy.  
 * Will attempt to replicate the modification time from the original file.
 * /*ww  w .  j  a v a2  s. c  o  m*/
 * @param sourceFile   File to copy
 * @param destFile      Destination file
 * @param deleteSource   If <code>true</code>, will delete original after copy
 * @return            The number of bytes copied
 * @throws IOException
 */
public static long copyLocalFile(File sourceFile, File destFile, boolean deleteSource) throws IOException {
    long bytesCopied = 0L;

    if ((sourceFile == null) || (destFile == null)) {
        throw new NullPointerException(
                "Source or destination file is null (source: " + sourceFile + ", dest: " + destFile + ")");
    }

    if (!destFile.exists()) {
        destFile.createNewFile();
    }

    String origSourcePath = sourceFile.getPath();
    File tempFile = new File(tempNameForSourceFile(sourceFile.getPath()));
    FileChannel source = null;
    FileChannel destination = null;
    IOException cleanupException = null;
    boolean success = false;

    // Copy and validate result
    try {
        // Rename source file to temporary name before copying
        if (logger.isDebugEnabled()) {
            logger.debug("Renaming local file to: {}", tempFile.getPath());
        }
        if (!sourceFile.renameTo(tempFile)) {
            logger.error("Could not move file to new name: {}", tempFile.getAbsolutePath());
        } else {
            source = new FileInputStream(tempFile).getChannel();
            destination = new FileOutputStream(destFile).getChannel();
            bytesCopied = destination.transferFrom(source, 0, source.size());
            copyModificationTime(tempFile, destFile);

            // Check integrity of copy
            success = validateFileCopy(tempFile, destFile);
            if (!success) {
                logger.warn("Copy of file {} did not pass integrity check!", origSourcePath);
            }
        }
    } catch (IOException ex) {
        // If there's been an error copying the file, we may be left with a zero-length or incomplete file
        if (!success) {
            if (logger.isDebugEnabled()) {
                logger.debug("Deleting failed copy of local file: {}", destFile.getAbsolutePath());
            }
            destFile.delete();
        }
    } finally {
        // Use a try-block during cleanup, but only throw exception if the
        // main file-copy try-block doesn't
        try {
            if (source != null) {
                source.close();
            }
            if (destination != null) {
                destination.close();
            }
            if (deleteSource && success) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Deleting local source file: {}", tempFile.getAbsolutePath());
                }
                tempFile.delete();
            } else {
                // Move source file back from temp name
                if (tempFile == null || !tempFile.renameTo(new File(origSourcePath))) {
                    logger.error("Could not restore original filename: {}", origSourcePath);
                }
            }
        } catch (IOException ex) {
            logger.warn("IOException during local file-copy cleanup: {}", ex);
            cleanupException = new IOException(ex);
        }
    }

    if (cleanupException != null) {
        throw cleanupException;
    }
    return bytesCopied;
}

From source file:org.apache.hadoop.hdfs.TestFileAppend4.java

/**
 * Corrupt all of the blocks in the blocksBeingWritten dir
 * for the specified datanode number. The corruption is
 * specifically the last checksum chunk of the file being
 * modified by writing random data into it.
 *//*ww w  .  j  a  v  a  2s  .com*/
private void corruptDataNode(int dnNumber, CorruptionType type) throws Exception {
    // get the FS data of the specified datanode
    File data_dir = new File(System.getProperty("test.build.data"),
            "dfs/data/data" + Integer.toString(dnNumber * 2 + 1) + "/blocksBeingWritten");
    int corrupted = 0;
    for (File block : data_dir.listFiles()) {
        // only touch the actual data, not the metadata (with CRC)
        if (block.getName().startsWith("blk_") && !block.getName().endsWith("meta")) {
            if (type == CorruptionType.CORRUPT_LAST_CHUNK) {
                RandomAccessFile file = new RandomAccessFile(block, "rw");
                FileChannel channel = file.getChannel();
                Random r = new Random();
                long lastBlockSize = channel.size() % 512;
                long position = channel.size() - lastBlockSize;
                int length = r.nextInt((int) (channel.size() - position + 1));
                byte[] buffer = new byte[length];
                r.nextBytes(buffer);

                channel.write(ByteBuffer.wrap(buffer), position);
                System.out.println("Deliberately corrupting file " + block.getName() + " at offset " + position
                        + " length " + length);
                file.close();

            } else if (type == CorruptionType.TRUNCATE_BLOCK_TO_ZERO) {
                LOG.info("Truncating block file at " + block);
                RandomAccessFile blockFile = new RandomAccessFile(block, "rw");
                blockFile.setLength(0);
                blockFile.close();

                RandomAccessFile metaFile = new RandomAccessFile(FSDataset.findMetaFile(block), "rw");
                metaFile.setLength(0);
                metaFile.close();
            } else if (type == CorruptionType.TRUNCATE_BLOCK_HALF) {
                FSDatasetTestUtil.truncateBlockFile(block, block.length() / 2);
            } else {
                assert false;
            }
            ++corrupted;
        }
    }
    assertTrue("Should have some data in bbw to corrupt", corrupted > 0);
}

From source file:org.opennms.install.Installer.java

/**
 * <p>copyFile</p>/*from  w ww . j  a  va  2 s.  co m*/
 *
 * @param source a {@link java.lang.String} object.
 * @param destination a {@link java.lang.String} object.
 * @param description a {@link java.lang.String} object.
 * @param recursive a boolean.
 * @throws java.lang.Exception if any.
 */
public void copyFile(String source, String destination, String description, boolean recursive)
        throws Exception {
    File sourceFile = new File(source);
    File destinationFile = new File(destination);

    if (!sourceFile.exists()) {
        throw new Exception("source file (" + source + ") does not exist!");
    }
    if (!sourceFile.isFile()) {
        throw new Exception("source file (" + source + ") is not a file!");
    }
    if (!sourceFile.canRead()) {
        throw new Exception("source file (" + source + ") is not readable!");
    }
    if (destinationFile.exists()) {
        System.out.print("  - " + destination + " exists, removing... ");
        if (destinationFile.delete()) {
            System.out.println("REMOVED");
        } else {
            System.out.println("FAILED");
            throw new Exception("unable to delete existing file: " + sourceFile);
        }
    }

    System.out.print("  - copying " + source + " to " + destination + "... ");
    if (!destinationFile.getParentFile().exists()) {
        if (!destinationFile.getParentFile().mkdirs()) {
            throw new Exception("unable to create directory: " + destinationFile.getParent());
        }
    }
    if (!destinationFile.createNewFile()) {
        throw new Exception("unable to create file: " + destinationFile);
    }
    FileChannel from = null;
    FileInputStream fisFrom = null;
    FileChannel to = null;
    FileOutputStream fisTo = null;
    try {
        fisFrom = new FileInputStream(sourceFile);
        from = fisFrom.getChannel();
        fisTo = new FileOutputStream(destinationFile);
        to = fisTo.getChannel();
        to.transferFrom(from, 0, from.size());
    } catch (FileNotFoundException e) {
        throw new Exception("unable to copy " + sourceFile + " to " + destinationFile, e);
    } finally {
        IOUtils.closeQuietly(fisTo);
        IOUtils.closeQuietly(to);
        IOUtils.closeQuietly(fisFrom);
        IOUtils.closeQuietly(from);
    }
    System.out.println("DONE");
}

From source file:com.clustercontrol.agent.job.PublicKeyThread.java

/**
 * ?Authorized_key????<BR>/*from   ww  w . j  ava2s  . c  om*/
 * 
 * @param publicKey
 * @return
 */
private synchronized boolean addKey(String publicKey) {
    m_log.debug("add key start");

    if (SKIP_KEYFILE_UPDATE) {
        m_log.info("skipped appending publicKey");
        return true;
    }

    //???
    String fileName = AgentProperties.getProperty(execUser.toLowerCase() + AUTHORIZED_KEY_PATH);

    m_log.debug("faileName" + fileName);
    if (fileName == null || fileName.length() == 0)
        return false;

    //File?
    File fi = new File(fileName);

    RandomAccessFile randomAccessFile = null;
    FileChannel channel = null;
    FileLock lock = null;
    boolean add = false;
    try {
        //RandomAccessFile?
        randomAccessFile = new RandomAccessFile(fi, "rw");
        //FileChannel?
        channel = randomAccessFile.getChannel();

        // 
        for (int i = 0; i < (FILELOCK_TIMEOUT / FILELOCK_WAIT); i++) {
            if (null != (lock = channel.tryLock())) {
                break;
            }
            m_log.info("waiting for locked file... [" + (i + 1) + "/" + (FILELOCK_TIMEOUT / FILELOCK_WAIT)
                    + " : " + fileName + "]");
            Thread.sleep(FILELOCK_WAIT);
        }
        if (null == lock) {
            m_log.warn("file locking timeout.");
            return false;
        }

        // (?)
        synchronized (authKeyLock) {
            //??
            channel.position(channel.size());

            //?
            String writeData = "\n" + publicKey;
            // 
            m_log.debug("add key : " + writeData);

            //?????
            ByteBuffer buffer = ByteBuffer.allocate(512);

            //???
            buffer.clear();
            buffer.put(writeData.getBytes());
            buffer.flip();
            channel.write(buffer);
        }

        add = true;
    } catch (Exception e) {
        m_log.error(e);
    } finally {
        try {
            if (channel != null) {
                channel.close();
            }
            if (randomAccessFile != null) {
                randomAccessFile.close();
            }
            if (lock != null) {
                //
                lock.release();
            }
        } catch (Exception e) {
        }
    }

    return add;
}