Example usage for java.io FileOutputStream flush

Introduction

In this page you can find the example usage for java.io FileOutputStream flush.

Prototype

public void flush() throws IOException 

Source Link

Document

Flushes this output stream and forces any buffered output bytes to be written out.

Usage

From source file:com.glaf.core.security.DigestUtil.java

public static void digestFile(String filename, String algorithm) {
    byte[] b = new byte[65536];
    int read = 0;
    FileInputStream fis = null;//ww w. j ava  2  s. c o m
    FileOutputStream fos = null;
    OutputStream encodedStream = null;
    try {
        MessageDigest md = MessageDigest.getInstance(algorithm);
        fis = new FileInputStream(filename);
        while (fis.available() > 0) {
            read = fis.read(b);
            md.update(b, 0, read);
        }
        byte[] digest = md.digest();
        StringBuffer fileNameBuffer = new StringBuffer(256).append(filename).append('.').append(algorithm);
        fos = new FileOutputStream(fileNameBuffer.toString());
        encodedStream = MimeUtility.encode(fos, "base64");
        encodedStream.write(digest);
        fos.flush();
    } catch (Exception ex) {
        throw new RuntimeException("Error computing Digest: " + ex);
    } finally {
        IOUtils.closeQuietly(fis);
        IOUtils.closeQuietly(fos);
        IOUtils.closeQuietly(encodedStream);
    }
}

---

From source file:com.baidu.rigel.biplatform.ma.file.serv.util.LocalFileOperationUtils.java

/**
 * ???//from ww w .  ja  v  a 2 s . c om
 * 
 * @param oldFile
 *            
 * @param newFile
 *            
 * @return
 * @throws IOException
 */
private static boolean copy(File oldFile, File newFile) {
    FileInputStream fileInputStream = null;
    FileOutputStream fileOutputStream = null;
    try {
        fileInputStream = new FileInputStream(oldFile);
        fileOutputStream = new FileOutputStream(newFile);
        byte[] buf = new byte[1024];
        int len = 0;
        // ??
        while ((len = fileInputStream.read(buf)) != -1) {
            fileOutputStream.write(buf, 0, len);
            fileOutputStream.flush();
        }
        return true;
    } catch (IOException e) {
        LOG.error(e.getMessage(), e);
        return false;
    } finally {
        try {
            if (fileInputStream != null) {
                fileInputStream.close();
            }
            if (fileOutputStream != null) {
                fileOutputStream.close();
            }
        } catch (IOException e) {
            LOG.error(e.getMessage(), e);
        }
    }
}

---

From source file:com.zacwolf.commons.crypto.Crypter_AES.java

/**
 * @param keyfile/*w  w  w . j ava2 s .co m*/
 * @param keysize
 * @param salter
 * @throws InvalidKeySpecException
 * @throws IOException
 * @throws NoSuchAlgorithmException
 */
public final static void generateNewKeyFile(final File keyfile, final int keysize, final SecureRandom salter)
        throws InvalidKeySpecException, IOException, NoSuchAlgorithmException {
    if (keysize > Cipher.getMaxAllowedKeyLength(mytype))
        throw new InvalidKeySpecException(
                "You specified a key size not supported by your current cryptographic libraries, which currently have a max key size of "
                        + Cipher.getMaxAllowedKeyLength(mytype) + " for " + mytype);

    final FileOutputStream fos = new FileOutputStream(keyfile);
    try {
        final KeyGenerator kgen = KeyGenerator.getInstance(mytype);
        kgen.init(keysize > mykeysizemax ? mykeysizemax : keysize, salter); // 192 and 256 bits may not be available
        final SecretKey sk = kgen.generateKey();
        fos.write(sk.getEncoded());
    } finally {
        fos.flush();
        fos.close();
        ;
    }
}

---

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

/**
 * byte//from w  w w .ja  v  a2  s  . c  om
 */
public static void write(final byte[] srcArray, File targetFile, final boolean overwrite) throws IOException {
    if (srcArray == null) {
        throw new IOException("Source must not be null");
    }

    if (targetFile == null) {
        throw new IOException("Target must not be null");
    }

    if (true == targetFile.exists()) {
        if (true == targetFile.isDirectory()) {
            throw new IOException("Target '" + targetFile.getAbsolutePath() + "' is directory!");
        } else if (true == targetFile.isFile()) {
            if (!overwrite) {
                throw new IOException("Target file '" + targetFile.getAbsolutePath() + "' already exists!");
            }
        } else {
            throw new IOException("Invalid target object '" + targetFile.getAbsolutePath() + "'!");
        }
    } else {
        // create parent dir
        create(targetFile.getParentFile(), false, 3);
    }

    // ?inputStream
    ByteArrayInputStream input = null;
    FileOutputStream output = null;
    try {
        input = new ByteArrayInputStream(srcArray);
        output = new FileOutputStream(targetFile);
        copy(input, output);
        output.flush();
    } finally {
        IOUtils.closeQuietly(input);
        IOUtils.closeQuietly(output);
    }
}

---

From source file:com.baidu.rigel.biplatform.ma.file.serv.util.LocalFileOperationUtils.java

/**
 * content/*from w ww. j ava2 s .  co m*/
 * 
 * @param file
 *            ?
 * @param content
 *            
 * @param code
 *            ??
 */
public static boolean writeFile(File file, byte[] content) {
    FileOutputStream fileOutputStream = null;
    try {
        if (file == null) {
            return false;
        }

        if (content == null) {
            return false;
        }

        if (content.length == 0) {
            return false;
        }
        fileOutputStream = new FileOutputStream(file);
        // 
        fileOutputStream.write(content);
        fileOutputStream.flush();
        return true;
    } catch (IOException e) {
        LOG.error(e.getMessage(), e);
        return false;
    } finally {
        if (fileOutputStream != null) {
            try {
                fileOutputStream.close();
            } catch (IOException e) {
                LOG.error(e.getMessage(), e);
            }
        }
    }
}

---

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

/**
 * Copy source file to destination. If destination is a path then source file name is appended. If destination file
 * exists then: overwrite=true - destination file is replaced; overwite=false - exception is thrown
 *//*from   w w w  . ja v  a 2 s .  com*/
public static void copy(final File sourceFile, File targetFile, final boolean overwrite) throws IOException {
    if (sourceFile == null) {
        throw new IOException("Source must not be null");
    }

    if (targetFile == null) {
        throw new IOException("Target must not be null");
    }

    // checks
    if ((false == sourceFile.isFile()) || (false == sourceFile.exists())) {
        throw new IOException("Source file '" + sourceFile.getAbsolutePath() + "' not found!");
    }

    if (true == targetFile.exists()) {
        if (true == targetFile.isDirectory()) {

            // Directory? -> use source file name
            targetFile = new File(targetFile, sourceFile.getName());
        } else if (true == targetFile.isFile()) {
            if (false == overwrite) {
                throw new IOException("Target file '" + targetFile.getAbsolutePath() + "' already exists!");
            }
        } else {
            throw new IOException("Invalid target object '" + targetFile.getAbsolutePath() + "'!");
        }
    } else {
        // create parent dir
        FileUtils.forceMkdir(targetFile.getParentFile());
    }

    FileInputStream input = null;
    FileOutputStream output = null;

    try {
        input = new FileInputStream(sourceFile);
        output = new FileOutputStream(targetFile);
        copy(input, output);
        output.flush();
    } finally {
        IOUtils.closeQuietly(input);
        IOUtils.closeQuietly(output);
    }
}

---

From source file:Main.java

public static boolean saveToSDCard(Bitmap bitmap) {
    if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
        return false;
    }/*  w  w w .j a  v a 2s.c om*/
    FileOutputStream fileOutputStream = null;
    File file = new File("/sdcard/myName/Download/");
    if (!file.exists()) {
        file.mkdirs();
    }
    String fileName = UUID.randomUUID().toString() + ".jpg";
    String filePath = "/sdcard/myName/Download/" + fileName;
    File f = new File(filePath);
    if (!f.exists()) {
        try {
            f.createNewFile();
            fileOutputStream = new FileOutputStream(filePath);
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fileOutputStream);
        } catch (IOException e) {
            return false;
        } finally {
            try {
                fileOutputStream.flush();
                fileOutputStream.close();
            } catch (IOException e) {
                return false;
            }
        }
    }
    return true;
}

---

From source file:com.uf.togathor.db.couchdb.ConnectionHandler.java

/**
 * Get a File object from an URL// ww w  .  ja va 2  s. co m
 * 
 * @param url
 * @param path
 * @return
 * @throws IOException 
 * @throws ClientProtocolException 
 * @throws TogathorException
 * @throws JSONException 
 * @throws IllegalStateException 
 * @throws TogathorForbiddenException
 */
public static void getFile(String url, File file, String userId, String token) throws IOException,
        TogathorException, IllegalStateException, JSONException, TogathorForbiddenException {

    File mFile = file;

    //URL mUrl = new URL(url); // you can write here any link

    InputStream is = httpGetRequest(url, userId);
    BufferedInputStream bis = new BufferedInputStream(is);

    ByteArrayBuffer baf = new ByteArrayBuffer(20000);
    int current = 0;
    while ((current = bis.read()) != -1) {
        baf.append((byte) current);
    }

    /* Convert the Bytes read to a String. */
    FileOutputStream fos = new FileOutputStream(mFile);
    fos.write(baf.toByteArray());
    fos.flush();
    fos.close();
    is.close();

}

---

From source file:net.grinder.util.LogCompressUtil.java

/**
 * Uncompress the given array into the given file.
 * //from  ww  w.ja v a  2  s  .  c om
 * @param zipEntry
 *            byte array of compressed file
 * @param toFile
 *            file to be written
 */
public static void unCompressGzip(byte[] zipEntry, File toFile) {
    FileOutputStream fos = null;
    GZIPInputStream zipInputStream = null;
    ByteArrayInputStream bio = null;
    try {
        bio = new ByteArrayInputStream(zipEntry);
        zipInputStream = new GZIPInputStream(bio);
        fos = new FileOutputStream(toFile);
        byte[] buffer = new byte[COMPRESS_BUFFER_SIZE];
        int count = 0;
        while ((count = zipInputStream.read(buffer, 0, COMPRESS_BUFFER_SIZE)) != -1) {
            fos.write(buffer, 0, count);
        }
        fos.flush();
    } catch (IOException e) {
        LOGGER.error("Error occurs while uncompress {}", toFile.getAbsolutePath());
        LOGGER.error("Details", e);
        return;
    } finally {
        IOUtils.closeQuietly(fos);
        IOUtils.closeQuietly(bio);
        IOUtils.closeQuietly(zipInputStream);
    }
}

---

From source file:com.yibu.kuaibu.app.glApplication.java

public static void saveMyBitmap(Bitmap mBitmap, String bitName) {
    File f = new File(bitName);
    Log.i("application", "" + bitName);
    FileOutputStream fOut = null;
    try {//  w ww  .j  a v  a  2  s.  c  o  m
        fOut = new FileOutputStream(f);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
    try {
        fOut.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        fOut.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

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