Example usage for java.nio.channels FileChannel 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:edu.kit.cockpit.valuationserver.sfmpersistency.FileUtil.java

/**
 * @param file/*  w w  w  .j  a  v  a2s .  co m*/
 * @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 copyFdToFile(FileDescriptor src, File dst) throws IOException {
    FileChannel inChannel = new FileInputStream(src).getChannel();
    FileChannel outChannel = new FileOutputStream(dst).getChannel();
    try {// w  w  w  . j ava  2s  .c om
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:Main.java

private static void copyFile(File src, File dst) throws IOException {
    FileInputStream in = new FileInputStream(src);
    FileOutputStream out = new FileOutputStream(dst);
    FileChannel fromChannel = null, toChannel = null;
    try {/*ww  w .ja  v  a2 s  .c  om*/
        fromChannel = in.getChannel();
        toChannel = out.getChannel();
        fromChannel.transferTo(0, fromChannel.size(), toChannel);
    } finally {
        if (fromChannel != null)
            fromChannel.close();
        if (toChannel != null)
            toChannel.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 ww  w  .jav a2 s. 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

private static void copyFile(File src, File dst) throws Exception {
    FileChannel inChannel = (new FileInputStream(src)).getChannel();
    FileChannel outChannel = (new FileOutputStream(dst)).getChannel();
    try {//from   ww  w.j a v a  2 s  . c  om
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null)
            inChannel.close();
        if (outChannel != null)
            outChannel.close();
    }
}

From source file:Main.java

public static void copyFile(File src, File dst) throws IOException {
    FileChannel inChannel = new FileInputStream(src).getChannel();
    FileChannel outChannel = new FileOutputStream(dst).getChannel();
    try {/*from   ww  w.jav  a2 s .c  om*/
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:Main.java

public static void copyFile(File src, File dst) throws IOException {
    FileChannel inChannel = new FileInputStream(src).getChannel();
    FileChannel outChannel = new FileOutputStream(dst).getChannel();
    try {//from w w w  .j  av a  2s  . co  m
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
            outChannel.close();
        }
    }
}

From source file:Main.java

public static boolean importDatabase(String dbName) {

    try {//from   www. j av  a2s.c  o m
        File sd = Environment.getExternalStorageDirectory();
        File data = Environment.getDataDirectory();

        if (sd.canWrite()) {
            String currentDBPath = "//data//" + PACKAGENAME + "//databases//" + dbName;
            String backupDBPath = "/AttendanceManager/" + dbName;
            File backupDB = new File(data, currentDBPath);
            File currentDB = new File(sd, backupDBPath);

            FileChannel src = new FileInputStream(currentDB).getChannel();
            FileChannel dst = new FileOutputStream(backupDB).getChannel();
            dst.transferFrom(src, 0, src.size());
            src.close();
            dst.close();
        }
    } catch (Exception e) {
        return false;
    }
    return true;
}

From source file:Main.java

public static void saveDBInSdcard(Context pContext, String pDatabaseName) {
    try {/*from  ww  w  .  j  a va 2s .  com*/
        File sd = Environment.getExternalStorageDirectory();
        File data = Environment.getDataDirectory();

        if (sd.canWrite()) {
            String currentDBPath = "//data//" + pContext.getPackageName() + "//databases//" + pDatabaseName;
            String backupDBPath = pDatabaseName;
            File currentDB = new File(data, currentDBPath);
            File backupDB = new File(sd, backupDBPath);

            FileChannel src = new FileInputStream(currentDB).getChannel();
            FileChannel dst = new FileOutputStream(backupDB).getChannel();
            dst.transferFrom(src, 0, src.size());
            src.close();
            dst.close();
            Toast.makeText(pContext, backupDB.toString(), Toast.LENGTH_LONG).show();
        }
    } catch (Exception e) {
        Toast.makeText(pContext, e.toString(), Toast.LENGTH_LONG).show();
    }
}

From source file:Main.java

/** Copia un fichero.
 * @param source Fichero origen con el contenido que queremos copiar.
 * @param dest Fichero destino de los datos.
 * @throws IOException SI ocurre algun problema durante la copia */
public static void copyFile(final File source, final File dest) throws IOException {
    if (source == null || dest == null) {
        throw new IllegalArgumentException("Ni origen ni destino de la copia pueden ser nulos"); //$NON-NLS-1$
    }/*from  w  ww  .  j  av  a 2s . c om*/

    final FileInputStream is = new FileInputStream(source);
    final FileOutputStream os = new FileOutputStream(dest);
    final FileChannel in = is.getChannel();
    final FileChannel out = os.getChannel();
    final MappedByteBuffer buf = in.map(FileChannel.MapMode.READ_ONLY, 0, in.size());
    out.write(buf);

    in.close();
    out.close();
    is.close();
    os.close();

}