Example usage for java.io FileOutputStream write

Introduction

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

Prototype

public void write(byte b[]) throws IOException

Source Link

Document

Writes b.length bytes from the specified byte array to this file output stream.

Usage

From source file:com.kyon.klib.base.KFileUtils.java

public static void writeFile(Context context, String fileName, String writeStr) throws IOException {
    try {/* w  w  w.ja v  a 2  s.  com*/
        FileOutputStream fOut = context.openFileOutput(fileName, 0);
        byte[] bytes = writeStr.getBytes();
        fOut.write(bytes);
        fOut.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void saveJsonToFile(String toSave, String filename, Activity currActivity) {

    // check if the file exists
    File dir = currActivity.getFilesDir();
    File file = new File(dir, filename);

    if (file.exists()) {
        file.delete();/*ww  w.  j av a 2 s  .com*/
    }

    FileOutputStream outputStream;
    try {
        outputStream = currActivity.openFileOutput(filename, Context.MODE_APPEND);
        outputStream.write(toSave.getBytes());
        outputStream.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.vexsoftware.votifier.crypto.RSAIO.java

/**
 * Saves the key pair to the disk./*from w w  w .  j  ava  2 s. co  m*/
 * 
 * @param directory
 *            The directory to save to
 * @param keyPair
 *            The key pair to save
 * @throws Exception
 *             If an error occurs
 */
public static void save(File directory, KeyPair keyPair) throws Exception {
    PrivateKey privateKey = keyPair.getPrivate();
    PublicKey publicKey = keyPair.getPublic();

    // Store the public key.
    X509EncodedKeySpec publicSpec = new X509EncodedKeySpec(publicKey.getEncoded());
    FileOutputStream out = new FileOutputStream(directory + "/public.key");
    out.write(DatatypeConverter.printBase64Binary(publicSpec.getEncoded()).getBytes());
    out.close();

    // Store the private key.
    PKCS8EncodedKeySpec privateSpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    out = new FileOutputStream(directory + "/private.key");
    out.write(DatatypeConverter.printBase64Binary(privateSpec.getEncoded()).getBytes());
    out.close();
}

From source file:it.nicola_amatucci.util.JsonAndroidLocalIO.java

public static <T> boolean saveData(Context context, String filename, T o, Class<T> obj) {
    String document = null;/*from   www  .j a v  a 2  s  .c  om*/

    try {
        document = Json.json_from_object(o, obj).toString();

        if (document != null) {
            Log.i("TAG", document);
            FileOutputStream fos = context.openFileOutput(filename, Context.MODE_PRIVATE);
            fos.write(document.getBytes());
            fos.close();
            return true;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return false;
}

From source file:TripleDES.java

/** Save the specified TripleDES SecretKey to the specified file */
public static void writeKey(SecretKey key, File f)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
    // Convert the secret key to an array of bytes like this
    SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("DESede");
    DESedeKeySpec keyspec = (DESedeKeySpec) keyfactory.getKeySpec(key, DESedeKeySpec.class);
    byte[] rawkey = keyspec.getKey();

    // Write the raw key to the file
    FileOutputStream out = new FileOutputStream(f);
    out.write(rawkey);
    out.close();/*from  w ww  . ja va  2  s  .  c  o  m*/
}

From source file:com.redsqirl.workflow.utils.FileStream.java

public static void encryptFile(File in, File out) throws Exception {
    //Write the encrypted data to a new file:
    FileOutputStream outStream = new FileOutputStream(out);
    outStream.write(encryptFile(in));
    outStream.close();/* ww  w  . jav a  2  s .com*/
}

From source file:com.redsqirl.workflow.utils.FileStream.java

public static void decryptFile(File in, File out) throws Exception {
    //Write the encrypted data to a new file:
    FileOutputStream outStream = new FileOutputStream(out);
    outStream.write(decryptFile(in));
    outStream.close();// w ww. j  a v  a  2 s  .c  o  m
}

From source file:Main.java

private static void writeWord(FileOutputStream stream, int value) throws IOException {
    byte[] b = new byte[2];
    b[0] = (byte) (value & 0xff);
    b[1] = (byte) (value >> 8 & 0xff);
    stream.write(b);
}

From source file:com.dragome.callbackevictor.serverside.utils.RewritingUtils.java

public static void rewriteClassFile(final File pInput, final ResourceTransformer transformer,
        final File pOutput) throws IOException {

    final byte[] original = toByteArray(pInput);
    byte[] transformed = transformer.transform(original);
    final FileOutputStream os = new FileOutputStream(pOutput);
    os.write(transformed);
    os.close();//  www .  j  a v a 2  s. co m
}

From source file:Main.java

public static boolean writeFile(byte[] buffer, String folder, String fileName) {
    boolean writeSucc = false;

    boolean sdCardExist = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);

    String folderPath = "";
    if (sdCardExist) {
        folderPath = Environment.getExternalStorageDirectory() + File.separator + folder + File.separator;
    } else {//from ww w . ja  v  a 2 s  .c om
        writeSucc = false;
    }

    File fileDir = new File(folderPath);
    if (!fileDir.exists()) {
        fileDir.mkdirs();
    }

    File file = new File(folderPath + fileName);
    FileOutputStream out = null;
    try {
        out = new FileOutputStream(file);
        out.write(buffer);
        writeSucc = true;
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    return writeSucc;
}