Example usage for java.nio.channels FileChannel close

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

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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:Main.java

/**
 * Copies the contents of one file to the other using {@link FileChannel}s.
 * //from w  w w. j  a  va  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:Main.java

public static void restoreDb(File currentDB, String restoreDBFileName) {
    try {/*from   w  w w  .  jav  a2s. co m*/
        backupDb(currentDB);
        File sd = Environment.getExternalStorageDirectory();
        File data = Environment.getDataDirectory();

        if (sd.canWrite()) {
            File f = new File(sd.getAbsolutePath() + "/AccountManagement");
            if (!f.exists()) {
                f.mkdir();
            }
            String restoreDBPath = "AccountManagement/" + restoreDBFileName;
            File restoreDB = new File(sd, restoreDBPath);

            if (currentDB.exists()) {
                FileChannel src = new FileInputStream(restoreDB).getChannel();
                FileChannel dst = new FileOutputStream(currentDB).getChannel();
                dst.transferFrom(src, 0, src.size());
                src.close();
                dst.close();
            }
        }
    } catch (Exception e) {
        System.out.println(e);
    }
}

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 ava2s .  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 .j a  v a 2s  . 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:Main.java

public static void backupDb(File currentDB) {
    try {//  ww w  . j a va 2s .c  o  m

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

        if (sd.canWrite()) {
            File f = new File(sd.getAbsolutePath() + "/AccountManagement");
            if (!f.exists()) {
                f.mkdir();
            }
            Date currentDate = new Date();
            String currentDateStr = newFormat1.format(currentDate);

            currentDateStr = currentDateStr.trim();
            System.out.println(
                    "---------------------------------------------------------------" + currentDateStr);
            String backupDBPath = "AccountManagement/backup_" + currentDateStr + ".db";
            File backupDB = new File(sd, backupDBPath);

            if (currentDB.exists()) {
                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) {
        System.out.println(e);
    }
}

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 {// w w w.j a v  a 2s.  com
        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 {/*  w ww  . j  a  v  a2  s  .  c  o m*/
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:Main.java

public static byte[] readFileToMemory(String file) throws IOException {
    FileInputStream fis = new FileInputStream(file);
    FileChannel fileChannel = fis.getChannel();
    long size = fileChannel.size();
    MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, size);
    byte[] data = new byte[(int) size];
    mappedByteBuffer.get(data, 0, (int) size);
    fileChannel.close();
    fis.close();//from  ww w.j a v a  2s  .c om
    return data;
    //      return readFileToMemory(new File(file));
}

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.  j  a  v  a 2 s  .  c om*/
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
            outChannel.close();
        }
    }
}

From source file:Main.java

public static void copyFile(@NonNull String pathFrom, @NonNull String pathTo) throws IOException {
    FileChannel outputChannel = null;
    FileChannel inputChannel = null;
    try {//from   w  ww .j av a  2  s.co  m
        inputChannel = new FileInputStream(new File(pathFrom)).getChannel();
        outputChannel = new FileOutputStream(new File(pathTo)).getChannel();
        inputChannel.transferTo(0, inputChannel.size(), outputChannel);
        inputChannel.close();
    } finally {
        if (inputChannel != null)
            inputChannel.close();
        if (outputChannel != null)
            outputChannel.close();
    }

}