Example usage for java.io FileInputStream read

Introduction

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

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:Compress.java

public static void gzipFile(String from, String to) throws IOException {
    FileInputStream in = new FileInputStream(from);
    GZIPOutputStream out = new GZIPOutputStream(new FileOutputStream(to));
    byte[] buffer = new byte[4096];
    int bytesRead;
    while ((bytesRead = in.read(buffer)) != -1)
        out.write(buffer, 0, bytesRead);
    in.close();/*from   w w  w. j a  va2s  .  c o  m*/
    out.close();
}

From source file:Main.java

public static boolean isEncode(File f) {
    try {/*from  w  w w  .j a va 2  s .c  o  m*/
        FileInputStream input = new FileInputStream(f);
        //            input = new BufferedInputStream(input);
        byte[] ecodeBytes = new byte[ecodeTag.getBytes().length];
        input.read(ecodeBytes);
        input.close();
        return new String(ecodeBytes).equals(ecodeTag);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return false;
}

From source file:msec.org.GzipUtil.java

static public void zip(String srcFile) throws Exception {
    GzipCompressorOutputStream out = new GzipCompressorOutputStream(new FileOutputStream(srcFile + ".gz"));
    FileInputStream in = new FileInputStream(srcFile);
    byte[] buf = new byte[10240];
    while (true) {
        int len = in.read(buf);
        if (len <= 0) {
            break;
        }//from   w  w w  .  j a v a  2  s.  c  o  m
        out.write(buf, 0, len);
    }
    out.flush();
    out.close();
    in.close();
}

From source file:msec.org.GzipUtil.java

static public void zip(String srcFile, String destFile) throws Exception {
    GzipCompressorOutputStream out = new GzipCompressorOutputStream(new FileOutputStream(destFile));
    FileInputStream in = new FileInputStream(srcFile);
    byte[] buf = new byte[10240];
    while (true) {
        int len = in.read(buf);
        if (len <= 0) {
            break;
        }/*from w ww  . j a  va2 s.  c o  m*/
        out.write(buf, 0, len);
    }
    out.flush();
    out.close();
    in.close();
}

From source file:Main.java

private static void writeToOutFile(File toFile, FileInputStream fosfrom) throws IOException {
    FileOutputStream fosto = null;
    fosto = new FileOutputStream(toFile);
    byte bt[] = new byte[1024];
    int c;/* ww  w .  j  a  va 2s . c  o  m*/
    while ((c = fosfrom.read(bt)) > 0) {
        fosto.write(bt, 0, c);
    }
    fosto.close();

}

From source file:Main.java

public static void compressFiles(File files[], File fileCompressed) throws IOException {

    byte[] buffer = new byte[SIZE_OF_BUFFER];
    ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream(fileCompressed));
    for (int i = 0; i < files.length; i++) {
        FileInputStream fileInputStream = new FileInputStream(files[i]);
        zipOutputStream.putNextEntry(new ZipEntry(files[i].getPath()));

        int size;
        while ((size = fileInputStream.read(buffer)) > 0)
            zipOutputStream.write(buffer, 0, size);

        zipOutputStream.closeEntry();/*  w w w  . j  av a 2s  .  c om*/
        fileInputStream.close();
    }

    zipOutputStream.close();
}

From source file:org.apache.drill.exec.store.http.util.JsonConverter.java

@SuppressWarnings("resource")
public static String stringFromFile(String file) {
    try {//from w  w  w  . j  a v  a2 s .c  o m
        FileInputStream stream = new FileInputStream(file);
        int size = stream.available();
        byte[] bytes = new byte[size];
        stream.read(bytes);
        return new String(bytes, Charsets.UTF_8);
    } catch (IOException e) {
    }
    return "";
}

From source file:org.phpmaven.pear.library.impl.Helper.java

/**
 * Returns the binary file contents./*from  w  w w . j  av a 2 s . co m*/
 * @param uri URI of the resource.
 * @return the files content.
 * @throws IOException thrown on errors.
 */
public static byte[] getBinaryFileContents(String uri) throws IOException {
    // is it inside the local filesystem?
    if (uri.startsWith("file://")) {
        final File channelFile = new File(uri.substring(7));

        final byte[] result = new byte[(int) channelFile.length()];
        final FileInputStream fis = new FileInputStream(channelFile);
        fis.read(result);
        fis.close();
        return result;
    }

    // try http connection
    final HttpClient client = new DefaultHttpClient();
    final HttpGet httpget = new HttpGet(uri);
    final HttpResponse response = client.execute(httpget);
    if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
        throw new IOException("Invalid http status: " + response.getStatusLine().getStatusCode() + " / "
                + response.getStatusLine().getReasonPhrase());
    }
    final HttpEntity entity = response.getEntity();
    if (entity == null) {
        throw new IOException("Empty response.");
    }
    return EntityUtils.toByteArray(entity);
}

From source file:Main.java

public static byte[] getFileContent(String fileName) {
    FileInputStream fin = null;
    try {// w w w . j  a v  a  2  s. co  m
        fin = new FileInputStream(fileName);
        int length = fin.available();
        byte[] bytes = new byte[length];
        fin.read(bytes);
        return bytes;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    } finally {
        try {
            if (fin != null) {
                fin.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

From source file:Utils.java

/**
 * Zip a list of file into one zip file.
 * /*from ww  w.  jav a2 s  .  co  m*/
 * @param files
 *          files to zip
 * @param targetZipFile
 *          target zip file
 * @throws IOException
 *           IO error exception can be thrown when copying ...
 */
public static void zipFile(final File[] files, final File targetZipFile) throws IOException {
    try {
        FileOutputStream fos = new FileOutputStream(targetZipFile);
        ZipOutputStream zos = new ZipOutputStream(fos);
        byte[] buffer = new byte[128];
        for (int i = 0; i < files.length; i++) {
            File currentFile = files[i];
            if (!currentFile.isDirectory()) {
                ZipEntry entry = new ZipEntry(currentFile.getName());
                FileInputStream fis = new FileInputStream(currentFile);
                zos.putNextEntry(entry);
                int read = 0;
                while ((read = fis.read(buffer)) != -1) {
                    zos.write(buffer, 0, read);
                }
                zos.closeEntry();
                fis.close();
            }
        }
        zos.close();
        fos.close();
    } catch (FileNotFoundException e) {
        System.out.println("File not found : " + e);
    }

}