Example usage for java.nio.channels FileChannel close

Introduction

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

Prototype

public final void close() throws IOException

Source Link

Document

Closes this channel.

Usage

From source file:org.apache.solr.util.FileUtils.java

public static void copyFile(File src, File destination) throws IOException {
    FileChannel in = null;
    FileChannel out = null;//www  . j a  va  2  s . c o m
    try {
        in = new FileInputStream(src).getChannel();
        out = new FileOutputStream(destination).getChannel();
        in.transferTo(0, in.size(), out);
    } finally {
        try {
            if (in != null)
                in.close();
        } catch (IOException e) {
        }
        try {
            if (out != null)
                out.close();
        } catch (IOException e) {
        }
    }
}

From source file:maspack.fileutil.SafeFileUtils.java

public static boolean closeQuietly(FileChannel stream) {
    try {//from   w ww. ja  v a 2s . com
        stream.close();
    } catch (Exception e) {
        return false;
    }
    return true;
}

From source file:Main.java

public static void copyFile(File sourceFile, File destFile) throws IOException {

    new File(destFile.getParent()).mkdirs();

    if (!destFile.exists()) {
        destFile.createNewFile();//from   w  w  w .jav  a2  s .c  o  m
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

From source file:com.intuit.tank.service.impl.v1.report.FileReader.java

/**
 * Gets a StreamingOutput from the passedin file from start to end or from beginning to end if start is greater than
 * end. if a negative number is passed, it will get the last n lines of the file. If 0 is passed it will return the
 * entire file./*  w  w  w .  j  a  v  a 2s .  co m*/
 * 
 * @param total
 * 
 * @return a StreamingOutput
 */
public static StreamingOutput getFileStreamingOutput(final File f, long total, String start) {

    long l = 0;
    if (start != null) {
        try {
            l = Long.parseLong(start);
            // num lines to get from end
            if (l < 0) {
                l = getStartChar(f, Math.abs(l), total);
            }
        } catch (Exception e) {
            LOG.error("Error parsing start " + start + ": " + e);
        }
    }
    final long to = l > total ? 0 : total;
    final long from = l;

    StreamingOutput streamer = new StreamingOutput() {
        @SuppressWarnings("resource")
        @Override
        public void write(final OutputStream output) throws IOException, WebApplicationException {

            final FileChannel inputChannel = new FileInputStream(f).getChannel();
            final WritableByteChannel outputChannel = Channels.newChannel(output);
            try {
                inputChannel.transferTo(from, to, outputChannel);
            } finally {
                // closing the channels
                inputChannel.close();
                outputChannel.close();
            }
        }
    };
    LOG.debug("returning data from " + from + " - " + to + " of total " + total);
    return streamer;
}

From source file:edu.clemson.cs.nestbed.server.util.FileUtils.java

public static void copyFile(File in, File out) throws FileNotFoundException, IOException {
    FileChannel sourceChannel = null;
    FileChannel destinationChannel = null;

    try {// ww  w.  ja v a 2  s.c  o  m
        sourceChannel = new FileInputStream(in).getChannel();
        destinationChannel = new FileOutputStream(out).getChannel();
        sourceChannel.transferTo(0, sourceChannel.size(), destinationChannel);
    } finally {
        try {
            sourceChannel.close();
        } catch (Exception ex) {
        }
        try {
            destinationChannel.close();
        } catch (Exception ex) {
        }
    }
}

From source file:com.alibaba.otter.shared.common.utils.NioUtilsPerformance.java

public static void channelTest(File source, File target) throws Exception {
    FileInputStream fis = null;//from w ww .  ja v  a  2 s .  c  o m
    FileOutputStream fos = null;
    try {
        fis = new FileInputStream(source);
        fos = new FileOutputStream(target);
        FileChannel sChannel = fis.getChannel();
        FileChannel tChannel = fos.getChannel();

        target.createNewFile();

        ByteBuffer buffer = ByteBuffer.allocate(16 * 1024);
        while (sChannel.read(buffer) > 0) {
            buffer.flip();
            tChannel.write(buffer);
            buffer.clear();
        }

        tChannel.close();
        sChannel.close();
    } finally {
        IOUtils.closeQuietly(fis);
        IOUtils.closeQuietly(fos);
    }
}

From source file:org.neo4j.server.webadmin.AbstractWebadminTest.java

private static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.exists()) {
        destFile.createNewFile();//from  w  w w.  jav a 2 s  . c  o m
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

From source file:Grep.java

public static void setFile(File f) throws IOException {
    FileInputStream fis = new FileInputStream(f);
    FileChannel fc = fis.getChannel();

    // Get the file's size and then map it into memory
    int sz = (int) fc.size();
    MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, sz);
    // Decode the file into a char buffer
    indexFile = decoder.decode(bb);//from  www. ja v a 2s . c  o m

    fc.close();
}

From source file:GrepSun.java

private static void grep(File f) throws IOException {

    // Open the file and then get a channel from the stream
    FileInputStream fis = new FileInputStream(f);
    FileChannel fc = fis.getChannel();

    // Get the file's size and then map it into memory
    int sz = (int) fc.size();
    MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, sz);

    // Decode the file into a char buffer
    CharBuffer cb = decoder.decode(bb);

    // Perform the search
    grep(f, cb);// w  ww .j ava 2s. c  o  m

    // Close the channel and the stream
    fc.close();
}

From source file:Main.java

/**
 * /* w w  w.  j a  v  a2s  .  co  m*/
 * copy file
 * 
 * @param src
 *            source file
 * @param dest
 *            target file
 * @throws IOException
 */
public static void copyFile(File src, File dest) throws IOException {
    FileChannel inChannel = null;
    FileChannel outChannel = null;
    try {
        if (!dest.exists()) {
            dest.createNewFile();
        }
        inChannel = new FileInputStream(src).getChannel();
        outChannel = new FileOutputStream(dest).getChannel();
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}