Example usage for java.io FileInputStream FileInputStream

Introduction

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

Prototype

public FileInputStream(FileDescriptor fdObj)

Source Link

Document

Creates a FileInputStream by using the file descriptor fdObj, which represents an existing connection to an actual file in the file system.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    FileInputStream is = new FileInputStream("your.keystore");

    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    keystore.load(is, "my-keystore-password".toCharArray());

    Enumeration e = keystore.aliases();
    for (; e.hasMoreElements();) {
        String alias = (String) e.nextElement();

        java.security.cert.Certificate cert = keystore.getCertificate(alias);
        if (cert instanceof X509Certificate) {
            X509Certificate x509cert = (X509Certificate) cert;

            // Get subject
            Principal principal = x509cert.getSubjectDN();
            String subjectDn = principal.getName();

            // Get issuer
            principal = x509cert.getIssuerDN();
            String issuerDn = principal.getName();
        }//from   ww  w . j  a  v a 2 s.  c  o m
    }
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {

    FileInputStream inFile = new FileInputStream(args[0]);
    FileOutputStream outFile = new FileOutputStream(args[1]);

    FileChannel inChannel = inFile.getChannel();
    FileChannel outChannel = outFile.getChannel();

    FileLock outLock = outChannel.lock();
    FileLock inLock = inChannel.lock(0, inChannel.size(), true);

    inChannel.transferTo(0, inChannel.size(), outChannel);

    outLock.release();//from  w  w w  . j ava  2 s  . c o m
    inLock.release();

    inChannel.close();
    outChannel.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    boolean bool = false;

    // create input streams
    InputStream is = new FileInputStream("C://test.txt");
    FilterInputStream fis = new BufferedInputStream(is);

    // tests if the input stream supports mark() and reset()
    bool = fis.markSupported();//from  w w  w  .  ja  v a2  s .  co  m

    // prints
    System.out.print("Supports mark and reset methods: " + bool);

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    GZIPOutputStream out = new GZIPOutputStream(new FileOutputStream("outfile.gzip"));
    FileInputStream in = new FileInputStream("infilename");

    byte[] buf = new byte[1024];
    int len;//from w  w  w . j av  a 2  s .c o  m
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
    }
    in.close();

    out.finish();
    out.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    File file = new File("myimage.gif");
    FileInputStream fis = new FileInputStream(file);
    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@//server.local:1521/prod", "scott",
            "tiger");
    conn.setAutoCommit(false);/*w  ww .  j  av  a2s .  c om*/
    PreparedStatement ps = conn.prepareStatement("insert into images values (?,?)");
    ps.setString(1, file.getName());
    ps.setBinaryStream(2, fis, (int) file.length());
    ps.executeUpdate();
    ps.close();
    fis.close();

}

From source file:Main.java

public static void main(String args[]) {
    ProgressMonitorInputStream monitor;
    try {//from w w w  .j  av  a  2 s .  co  m
        monitor = new ProgressMonitorInputStream(null, "Loading ", new FileInputStream("yourFile.dat"));
        while (monitor.available() > 0) {
            byte[] data = new byte[38];
            monitor.read(data);
            System.out.write(data);
        }
    } catch (Exception e) {
        JOptionPane.showMessageDialog(null, "Unable to find file: yourFile.dat", "Error",
                JOptionPane.ERROR_MESSAGE);
    }
}

From source file:Main.java

public static void main(String[] args) {
    for (int i = 0; i < args.length; i++) {
        try {/*from w  w w  . ja  v a 2  s. c o  m*/
            FileInputStream fin = new FileInputStream(args[i]);
            FileOutputStream fout = new FileOutputStream(args[i] + "dfl");
            DeflaterOutputStream dos = new DeflaterOutputStream(fout);
            for (int c = fin.read(); c != -1; c = fin.read()) {
                dos.write(c);
            }
            dos.close();
            fin.close();
        } catch (IOException ex) {
            System.err.println(ex);
        }
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String inFilename = "infile.gzip";
    GZIPInputStream in = new GZIPInputStream(new FileInputStream(inFilename));

    String outFilename = "outfile";
    OutputStream out = new FileOutputStream(outFilename);

    byte[] buf = new byte[1024];
    int len;//w w w .j  a v  a2s . co m
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
    }

    in.close();
    out.close();
}

From source file:MainClass.java

public static void main(String[] a) {
    File aFile = new File("charData.txt");
    FileInputStream inFile = null;
    try {/*  w  w w . j a  v  a  2s.c o m*/
        inFile = new FileInputStream(aFile);
    } catch (FileNotFoundException e) {
        e.printStackTrace(System.err);
        System.exit(1);
    }
    FileChannel inChannel = inFile.getChannel();
}

From source file:Main.java

public static void main(final String[] args) throws IOException {
    File infile = new File("/tmp/utf16.txt");
    FileInputStream inputStream = new FileInputStream(infile);
    Reader in = new InputStreamReader(inputStream, "UTF-16");
    int read;/*from ww  w .  j ava  2  s  . com*/
    while ((read = in.read()) != -1) {
        System.out.print(Character.toChars(read));
    }
    in.close();
}