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:MainClass.java

public static void main(String[] args) throws Exception {
    createFile();//w w w  .j  a v a2 s  .c o m

    File aFile = new File("C:/primes.bin");
    FileInputStream inFile = new FileInputStream(aFile);

    FileChannel inChannel = inFile.getChannel();

    final int PRIMESREQUIRED = 10;
    ByteBuffer buf = ByteBuffer.allocate(8 * PRIMESREQUIRED);

    long[] primes = new long[PRIMESREQUIRED];
    int index = 0; // Position for a prime in the file

    // Count of primes in the file
    final int PRIMECOUNT = (int) inChannel.size() / 8;

    // Read the number of random primes required
    for (int i = 0; i < PRIMESREQUIRED; i++) {
        index = 8 * (int) (PRIMECOUNT * Math.random());
        inChannel.read(buf, index); // Read the value
        buf.flip();
        primes[i] = buf.getLong(); // Save it in the array
        buf.clear();
    }

    for (long prime : primes) {
        System.out.printf("%12d", prime);
    }
    inFile.close(); // Close the file and the channel

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("yourXML.xml");
    FileInputStream inputStream = new FileInputStream(file);
    XMLInputFactory inputFactory = XMLInputFactory.newInstance();
    XMLStreamReader reader = inputFactory.createXMLStreamReader(inputStream);

    System.out.println(reader.getVersion());
    System.out.println(reader.isStandalone());
    System.out.println(reader.standaloneSet());
    System.out.println(reader.getEncoding());
    System.out.println(reader.getCharacterEncodingScheme());

    parseRestOfDocument(reader);/*  w ww  . j  a va 2s .c  o  m*/
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int sChunk = 8192;

    String zipname = "a.gz";
    FileOutputStream out = new FileOutputStream(zipname);
    GZIPOutputStream zipout = new GZIPOutputStream(out);
    byte[] buffer = new byte[sChunk];

    FileInputStream in = new FileInputStream(args[0]);
    int length;//from ww w .  ja v a 2  s .  co m
    while ((length = in.read(buffer, 0, sChunk)) != -1)
        zipout.write(buffer, 0, length);
    in.close();
    zipout.close();

}

From source file:Main.java

public static void main(String[] args) {
    byte[] b = { 'h', 'e', 'l', 'l', 'o' };
    try {//from w  w w  . jav a  2  s.c o m

        // create a new output stream
        OutputStream os = new FileOutputStream("test.txt");

        // craete a new input stream
        InputStream is = new FileInputStream("test.txt");

        // write something
        os.write(b);

        // read what we wrote
        for (int i = 0; i < b.length; i++) {
            System.out.print((char) is.read());
        }
        os.close();
        is.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }

}

From source file:Grep.java

public static void main(String args[]) throws Exception {
    String regex = "";
    InputStream in = System.in;

    regex = args[0];//  w  w w . j a  va2s  . co  m
    in = new BufferedInputStream(new FileInputStream(args[1]));
    Pattern p = null;

    p = Pattern.compile(regex);

    BufferedReader buff = new BufferedReader(new InputStreamReader(in));

    String a;
    for (a = buff.readLine(); a != null; a = buff.readLine()) {
        Matcher m = p.matcher(a);
        if (m.find()) {
            System.out.println(a);
        }
    }
}

From source file:ScriptExecutionReaderDemo.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine jsEengine = manager.getEngineByExtension("js");
    Reader reader = new InputStreamReader(new FileInputStream("yourJavaScript.js"));
    jsEengine.eval(reader);//ww w.j  ava2s  .  c  o  m
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    PrintStream console = System.out;
    BufferedInputStream in = new BufferedInputStream(new FileInputStream("Redirecting.java"));
    PrintStream out = new PrintStream(new BufferedOutputStream(new FileOutputStream("test.out")));
    System.setIn(in);//from w ww. j a  va  2  s .  co  m
    System.setOut(out);
    System.setErr(out);
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String s;
    while ((s = br.readLine()) != null)
        System.out.println(s);
    out.close();
    System.setOut(console);
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Properties p = new Properties();

    p.put("today", new Date().toString());
    p.put("user", "A");

    FileOutputStream out = new FileOutputStream("user.props");
    p.storeToXML(out, "updated");

    FileInputStream in = new FileInputStream("user.props");

    p.loadFromXML(in);/*w  w  w.j a v a 2  s . c o m*/
    p.list(System.out);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Sequencer sequencer = MidiSystem.getSequencer();
    sequencer.open();// ww  w . jav a2s.c  om

    // From file
    InputStream is = new BufferedInputStream(new FileInputStream(new File("midifile")));

    // From URL
    //    is = new BufferedInputStream(new URL("http://hostname/rmffile")
    //      .openStream());

    sequencer.setSequence(is);

    // Start playing
    sequencer.start();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Sequencer sequencer = MidiSystem.getSequencer();
    sequencer.open();/*from   w  w  w  . j a v a  2 s  .  com*/

    // From file
    InputStream input = new BufferedInputStream(new FileInputStream(new File("midiaudiofile")));

    // From URL
    input = new BufferedInputStream(new URL("http://hostname/rmffile").openStream());

    sequencer.setSequence(input);

    // Start playing
    sequencer.start();
}