Example usage for java.io FileInputStream getChannel

Introduction

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

Prototype

public FileChannel getChannel()

Source Link

Document

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

Usage

From source file:Main.java

public static void copyFile(File src, File dst) throws IOException {
    FileInputStream in = new FileInputStream(src);
    FileOutputStream out = new FileOutputStream(dst);
    FileChannel inChannel = in.getChannel();
    FileChannel outChannel = out.getChannel();

    try {//from   www.  j a  va  2  s  .c  o  m
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        outChannel.close();
    }

    in.close();
    out.close();
}

From source file:com.viddu.handlebars.HandlebarsFileUtil.java

/**
 * Utility method to get contents of the File.
 * /*  w  w w  .  j av  a2  s.  c  o  m*/
 * @param inputFile
 * @return
 * @throws IOException
 */
public static String getFileContents(File inputFile) throws IOException {
    FileInputStream stream = new FileInputStream(inputFile);
    try {
        FileChannel fc = stream.getChannel();
        MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
        return Charset.defaultCharset().decode(bb).toString();
    } finally {
        stream.close();
    }

}

From source file:edu.kit.cockpit.valuationserver.sfmpersistency.FileUtil.java

/**
 * @param file//www.  ja  v  a 2  s. c  om
 * @return string representation of File
 * @throws IOException
 */
public static String readFile(File file) throws IOException {
    FileInputStream stream = new FileInputStream(file);
    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.defaultCharset().decode(bb).toString();
    } finally {
        stream.close();
    }
}

From source file:Main.java

public static void copy(File src, File dst) throws IOException {
    FileInputStream inStream = new FileInputStream(src);
    FileOutputStream outStream = new FileOutputStream(dst);
    FileChannel inChannel = inStream.getChannel();
    FileChannel outChannel = outStream.getChannel();
    inChannel.transferTo(0, inChannel.size(), outChannel);
    inStream.close();//from   w  ww . j  a v  a  2 s  .c o  m
    outStream.flush();
    outStream.close();
}

From source file:fm.moe.android.util.JSONFileHelper.java

private static String readFile(final File file) throws IOException {
    final FileInputStream stream = new FileInputStream(file);
    try {//from w  w  w. ja va2s  .  c o m
        final FileChannel fc = stream.getChannel();
        final MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
        /* Instead of using default, pass in a decoder. */
        return Charset.defaultCharset().decode(bb).toString();
    } finally {
        stream.close();
    }
}

From source file:Main.java

/**
 * Copies the contents of one file to the other using {@link FileChannel}s.
 * //from   w  w  w . j a  v  a  2 s. co m
 * @param src
 *            source {@link File}
 * @param dst
 *            destination {@link File}
 */
public static void copyFile(File src, File dst) throws IOException {
    FileInputStream in = new FileInputStream(src);
    FileOutputStream out = new FileOutputStream(dst);
    FileChannel inChannel = in.getChannel();
    FileChannel outChannel = out.getChannel();

    try {
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }

    in.close();
    out.close();
}

From source file:ja.lingo.engine.util.EngineFiles.java

private static void appendFile(String fileName, FileOutputStream fos, boolean prependWithLength)
        throws IOException {
    FileInputStream fis = new FileInputStream(fileName);
    FileChannel fic = fis.getChannel();
    FileChannel foc = fos.getChannel();

    ByteBuffer buffer = ByteBuffer.allocate(COPY_BUFFER_SIZE);

    // put header: length (1 int = 4 bytes)
    if (prependWithLength) {
        buffer.putInt((int) new File(fileName).length());
    }//from   www .  ja  va  2 s.c  o m

    // put body
    do {
        buffer.flip();
        foc.write(buffer);
        buffer.clear();
    } while (fic.read(buffer) != -1);
    fic.close();
    // NOTE: do not close 'foc'

    Files.delete(fileName);
}

From source file:Main.java

public static void copyFile(File src, File dest) throws IOException {
    FileOutputStream fileOut = null;
    FileInputStream fileIn = null;
    try {/*ww  w.j  a va2  s  .  c om*/
        fileOut = new FileOutputStream(dest);
        fileIn = new FileInputStream(src);
        FileChannel inChannel = fileIn.getChannel();
        FileChannel outChannel = fileOut.getChannel();
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (fileIn != null) {
            fileIn.close();
        }
        if (fileOut != null) {
            fileOut.close();
        }
    }
}

From source file:Main.java

public static void fastFileCopy(File source, File target) {
    FileChannel in = null;//from   ww  w. j  a va  2s .c  om
    FileChannel out = null;
    long start = System.currentTimeMillis();
    FileInputStream fis = null;
    FileOutputStream fos = null;
    try {
        fis = new FileInputStream(source);
        in = fis.getChannel();
        fos = new FileOutputStream(target);
        out = fos.getChannel();

        long size = in.size();
        long transferred = in.transferTo(0, size, out);

        while (transferred != size) {
            transferred += in.transferTo(transferred, size - transferred, out);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        close(fis);
        close(fos);
        close(in);
        close(out);
    }
    long end = System.currentTimeMillis();

    Log.d(target.getAbsolutePath(), nf.format(source.length()) + "B: "
            + ((end - start > 0) ? nf.format(source.length() / (end - start)) : 0) + " KB/s");
}

From source file:Main.java

public static boolean fileCopy(File srcFile, File dstFile) {
    int length = 1048891;
    FileChannel inC = null;//w ww  .  j  a v  a  2s .  c  om
    FileChannel outC = null;
    try {
        FileInputStream in = new FileInputStream(srcFile);
        FileOutputStream out = new FileOutputStream(dstFile);
        inC = in.getChannel();
        outC = out.getChannel();
        ByteBuffer b = null;
        while (inC.position() < inC.size()) {
            if ((inC.size() - inC.position()) < length) {
                length = (int) (inC.size() - inC.position());
            } else {
                length = 1048891;
            }
            b = ByteBuffer.allocateDirect(length);
            inC.read(b);
            b.flip();
            outC.write(b);
            outC.force(false);
        }

        return true;
    } catch (IOException e) {
        e.printStackTrace();
        return false;
    } finally {
        try {
            if (inC != null && inC.isOpen()) {
                inC.close();
            }
            if (outC != null && outC.isOpen()) {
                outC.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}