Example usage for java.io BufferedInputStream BufferedInputStream

Introduction

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

Prototype

public BufferedInputStream(InputStream in)

Source Link

Document

Creates a BufferedInputStream and saves its argument, the input stream in, for later use.

Usage

From source file:Main.java

/**
 * Copys a document file from one directory to another
 * @param documentPath/*  w  w  w . j a  va  2 s.c o m*/
 * @param destPath
 * @param filename
 * @param entityId src file Entity ID
 * @param newEntityId dest file Entity ID
 * @throws IOException
 */
public static void copyDocumentFile(File documentDir, File destDir, String filename, Object entityId,
        Object newEntityId) throws IOException {
    File src = new File(documentDir, filename);
    File dest = new File(destDir, filename);
    if (dest.exists())
        dest.delete();

    byte[] buffer = new byte[4096];
    int read = 0;
    InputStream in = null;
    OutputStream out = null;
    try {
        in = new BufferedInputStream(new FileInputStream(src));
        out = new BufferedOutputStream(new FileOutputStream(dest));
        while (true) {
            read = in.read(buffer);
            if (read == -1) {
                // -1 bedeutet EOF
                break;
            }
            out.write(buffer, 0, read);
        }
    } finally {
        if (in != null) {
            try {
                in.close();
            } finally {
                if (out != null) {
                    out.close();
                }
            }
        }
    }
}

From source file:MainClass.java

public static void desEncrypt(String f1, String f2) throws Exception {
    SecretKey key = null;/*  www.j av  a 2 s  . c  o  m*/
    ObjectInputStream keyFile = new ObjectInputStream(new FileInputStream("DESKey.ser"));
    key = (SecretKey) keyFile.readObject();
    keyFile.close();

    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    key = keygen.generateKey();
    ObjectOutputStream keyFileout = new ObjectOutputStream(new FileOutputStream("DESKey.ser"));
    keyFileout.writeObject(key);
    keyFileout.close();
    Cipher cipher = null;
    cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);
    BufferedInputStream in = new BufferedInputStream(new FileInputStream(f1));

    CipherOutputStream out = new CipherOutputStream(new BufferedOutputStream(new FileOutputStream(f2)), cipher);
    int i;
    do {
        i = in.read();
        if (i != -1)
            out.write(i);
    } while (i != -1);
    in.close();
    out.close();
}

From source file:Main.java

public static void writeUrlToFileNIO(String urlToRead, String folderToWrite, String fileName)
        throws MalformedURLException, IOException {
    URL urlIn = new URL(urlToRead);
    File folderOut = Paths.get(folderToWrite).toFile();
    if (!(folderOut.exists() || folderOut.mkdirs())) {
        throw new RuntimeException("could not create folder " + folderToWrite);
    }//ww w .jav  a2s.c  om
    Path pathOut = Paths.get(folderToWrite, fileName);
    try (ReadableByteChannel in = Channels.newChannel(new BufferedInputStream(urlIn.openStream()));
            WritableByteChannel out = Files.newByteChannel(pathOut, CREATE, WRITE);) {
        transfer(in, out);
    }
}

From source file:MainClass.java

static private String computeDigest(MessageDigest algorithm, String filename) {
    String returnValue = "";
    try {/*from   w  ww  .j a  v  a  2 s  .c  o  m*/
        algorithm.reset();
        FileInputStream fis = new FileInputStream(filename);
        BufferedInputStream bis = new BufferedInputStream(fis);
        DigestInputStream dis = new DigestInputStream(bis, algorithm);
        int ch;
        while ((ch = dis.read()) != -1)
            ;
        StringBuffer hexString = new StringBuffer();
        byte digest[] = algorithm.digest();
        int digestLength = digest.length;
        for (int i = 0; i < digestLength; i++) {
            hexString.append(hexDigit(digest[i]));
            hexString.append(" ");
        }
        returnValue = hexString.toString();
    } catch (IOException e) {
        System.err.println("Error generating digest for: " + filename);
    }
    return returnValue;
}

From source file:jfix.zk.Medias.java

public static InputStream asStream(Media media) {
    return new BufferedInputStream(
            media.inMemory() ? new ByteArrayInputStream(media.getByteData()) : media.getStreamData());
}

From source file:Main.java

/**
 * Extract the error of an HTTP response as a string.
 * @param connection the connection to read from.
 * @return the string extracted from the connection's error stream.
 * @throws Exception if any error occurs.
 *//*ww w  .jav  a  2 s.  com*/
static String readErrorBody(HttpURLConnection connection) throws Exception {
    return readString(new BufferedInputStream(connection.getErrorStream()));
}

From source file:Main.java

/**
 * Extract the body of an HTTP response as a string.
 * @param connection the connection to read from.
 * @return the string extracted from the connection's input stream.
 * @throws Exception if any error occurs.
 *///from   www .  j  ava  2s . com
static String readResponseBody(HttpURLConnection connection) throws Exception {
    return readString(new BufferedInputStream(connection.getInputStream()));
}

From source file:Main.java

public static boolean upZipFile(File zipFile, String folderPath) throws ZipException, IOException {
    ZipFile zfile = new ZipFile(zipFile);
    Enumeration<? extends ZipEntry> zList = zfile.entries();
    ZipEntry ze = null;/* w  w w  . j a v  a2s  .  com*/
    byte[] buf = new byte[1024];
    while (zList.hasMoreElements()) {
        ze = (ZipEntry) zList.nextElement();
        if (ze.isDirectory()) {
            continue;
        }
        Log.d(TAG, "ze.getName() = " + ze.getName());
        OutputStream os = new BufferedOutputStream(
                new FileOutputStream(getRealFileName(folderPath, ze.getName())));
        InputStream is = new BufferedInputStream(zfile.getInputStream(ze));
        int readLen = 0;
        while ((readLen = is.read(buf, 0, 1024)) != -1) {
            os.write(buf, 0, readLen);
        }
        is.close();
        os.close();
    }
    zfile.close();
    return true;
}

From source file:Main.java

/**
 * unzip some gzip compressed data/*from  w w w  .ja  v a  2  s .c  om*/
 * @param bytes the data to uncompress
 * @return the uncompressed data
 */
public static String gzipDecompress(byte[] bytes) {
    ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
    try {
        GZIPInputStream gs = new GZIPInputStream(stream);
        BufferedInputStream bufis = new BufferedInputStream(gs);
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        byte[] buf = new byte[1024];
        int len;
        while ((len = bufis.read(buf)) > 0) {
            bos.write(buf, 0, len);
        }
        return bos.toString();
    } catch (IOException e) {
        return null;
    }
}

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

public static <T> T loadData(Context context, String filename, Class<T> obj) {
    StringBuilder strContent = new StringBuilder("");
    try {//from ww w . ja v a 2s .c o  m
        BufferedInputStream in = new BufferedInputStream(context.openFileInput(filename));

        int ch;
        while ((ch = in.read()) != -1)
            strContent.append((char) ch);

        in.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    if (strContent.length() > 0) {
        try {
            Log.i("TAG", strContent.toString());
            JSONObject json = new JSONObject(strContent.toString());
            return Json.object_from_json(json, obj);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    return null;
}