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[] args) throws Exception {

    int i = 123456;

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    // write something in the file
    oout.writeInt(i);/* w w  w . jav a 2 s .  c  o  m*/
    oout.writeInt(54321);
    oout.flush();
    oout.close();
    // create an ObjectInputStream for the file we created before
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    // read and print an int
    System.out.println(ois.readInt());

    // read and print an int
    System.out.println(ois.readInt());
    ois.close();
}

From source file:Main.java

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

    byte[] buffer = { 65, 66, 67, 68, 69 };
    int i = 0;//w  w w.  j  ava2s. c  o m
    OutputStream os = new FileOutputStream("C://test.txt");
    FilterOutputStream fos = new FilterOutputStream(os);

    // writes buffer to the output stream
    fos.write(buffer, 2, 3);

    // forces byte contents to written out to the stream
    fos.flush();

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

    while ((i = fis.read()) != -1) {
        // converts integer to the character
        char c = (char) i;

        System.out.println("Character read: " + c);
    }
    fos.close();
    fis.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    oout.writeObject(new Example());
    oout.flush();//from  w  w w.j av a 2s. c  om
    oout.close();

    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    Example a = (Example) ois.readObject();

    System.out.println(a.s);

    a.validateObject();
    ois.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    XPathFactory xpf = XPathFactory.newInstance();
    XPath xp = xpf.newXPath();//www  .  ja va2 s. c  om
    xp.setNamespaceContext(new MyNamespaceContext());
    XPathExpression xpe = xp.compile("ns:feed/ns:entry");
    FileInputStream xmlStream = new FileInputStream("input.xml");
    InputSource xmlInput = new InputSource(xmlStream);
    Element result = (Element) xpe.evaluate(xmlInput, XPathConstants.NODE);
    System.out.println(result);
}

From source file:SerializationUtilsTrial.java

public static void main(String[] args) {
    try {/*from www  .  j a  va  2s. c om*/
        // File to serialize object to
        String fileName = "testSerialization.ser";

        // New file output stream for the file
        FileOutputStream fos = new FileOutputStream(fileName);

        // Serialize String
        SerializationUtils.serialize("SERIALIZE THIS", fos);
        fos.close();

        // Open FileInputStream to the file
        FileInputStream fis = new FileInputStream(fileName);

        // Deserialize and cast into String
        String ser = (String) SerializationUtils.deserialize(fis);
        System.out.println(ser);
        fis.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String filename = System.getProperty("java.home")
            + "/lib/security/cacerts".replace('/', File.separatorChar);
    FileInputStream is = new FileInputStream(filename);
    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    String password = "password";
    keystore.load(is, password.toCharArray());

    PKIXParameters params = new PKIXParameters(keystore);

    params.setRevocationEnabled(false);//from   ww  w.  j a  va  2s. c om

    CertPathValidator certPathValidator = CertPathValidator.getInstance(CertPathValidator.getDefaultType());
    CertPath certPath = null;
    CertPathValidatorResult result = certPathValidator.validate(certPath, params);

    PKIXCertPathValidatorResult pkixResult = (PKIXCertPathValidatorResult) result;
    TrustAnchor ta = pkixResult.getTrustAnchor();
    X509Certificate cert = ta.getTrustedCert();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    TransformerFactory factory = TransformerFactory.newInstance();
    Templates template = factory.newTemplates(new StreamSource(new FileInputStream("xsl.xlt")));
    Transformer xformer = template.newTransformer();
    Source source = new StreamSource(new FileInputStream("in.xml"));
    DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
    Document doc = builder.newDocument();
    Result result = new DOMResult(doc);
    xformer.transform(source, result);//from   w  w  w. j  ava  2  s.c  o  m
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    double data[] = { 1.1, 2.2, 3.3, 4.4, 5.5, 6.6 };
    DataOutputStream fout = new DataOutputStream(new DeflaterOutputStream(new FileOutputStream("data.dat")));
    fout.writeInt(data.length);//from ww w  .j av  a  2s  .  c o  m

    for (double d : data)
        fout.writeDouble(d);

    DataInputStream fin = new DataInputStream(new InflaterInputStream(new FileInputStream("data.dat")));
    int num = fin.readInt();

    double avg = 0.0;
    double d;

    for (int i = 0; i < num; i++) {
        d = fin.readDouble();
        avg += d;
        System.out.print(d + " ");
    }
    fin.close();
    fout.close();
}

From source file:Main.java

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

    short s = 56;

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    // write something in the file
    oout.writeShort(s);//w w w.  j  a  v  a 2s  . co  m
    oout.writeShort(new Short("1"));
    oout.flush();
    oout.close();
    // create an ObjectInputStream for the file we created before
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    // read and print a short
    System.out.println(ois.readShort());

    // read and print a short
    System.out.println(ois.readShort());
    ois.close();
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    InputSource in = new InputSource(new FileInputStream("y.xml"));
    DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();
    dfactory.setNamespaceAware(true);//from   www . jav  a 2 s.c  om
    Document doc = dfactory.newDocumentBuilder().parse(in);

    Transformer transformer = TransformerFactory.newInstance().newTransformer();
    transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");

    CachedXPathAPI path = new CachedXPathAPI();
    NodeIterator nl = path.selectNodeIterator(doc, "\\abc\\");

    Node n;
    while ((n = nl.nextNode()) != null)
        transformer.transform(new DOMSource(n), new StreamResult(new OutputStreamWriter(System.out)));
}