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[]) {
    FileInputStream fIn;//from  ww  w. j  a v  a  2 s . co  m
    FileOutputStream fOut;
    FileChannel fIChan, fOChan;
    long fSize;
    MappedByteBuffer mBuf;

    try {
        fIn = new FileInputStream(args[0]);
        fOut = new FileOutputStream(args[1]);

        fIChan = fIn.getChannel();
        fOChan = fOut.getChannel();

        fSize = fIChan.size();

        mBuf = fIChan.map(FileChannel.MapMode.READ_ONLY, 0, fSize);

        fOChan.write(mBuf); // this copies the file

        fIChan.close();
        fIn.close();

        fOChan.close();
        fOut.close();
    } catch (IOException exc) {
        System.out.println(exc);
        System.exit(1);
    } catch (ArrayIndexOutOfBoundsException exc) {
        System.out.println("Usage: Copy from to");
        System.exit(1);
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    File file = new File("image.gif");
    System.out.println(getFormatName(file));

    InputStream is = new FileInputStream(file);
    is.close();//from   ww w .j a  va  2s .c om
    System.out.println(getFormatName(is));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String destinationname = "d:\\";
    byte[] buf = new byte[1024];
    ZipInputStream zipinputstream = null;
    ZipEntry zipentry;//from   w  ww.  j av a  2 s  . c  om
    zipinputstream = new ZipInputStream(new FileInputStream("fileName"));
    zipentry = zipinputstream.getNextEntry();
    while (zipentry != null) {
        String entryName = zipentry.getName();
        FileOutputStream fileoutputstream;
        File newFile = new File(entryName);
        String directory = newFile.getParent();

        if (directory == null) {
            if (newFile.isDirectory())
                break;
        }
        fileoutputstream = new FileOutputStream(destinationname + entryName);
        int n;
        while ((n = zipinputstream.read(buf, 0, 1024)) > -1) {
            fileoutputstream.write(buf, 0, n);
        }
        fileoutputstream.close();
        zipinputstream.closeEntry();
        zipentry = zipinputstream.getNextEntry();
    }
    zipinputstream.close();
}

From source file:MainClass.java

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

    int eventTypeID = reader.nextTag();
    reader.require(XMLStreamConstants.START_ELEMENT, null, "person");

    eventTypeID = reader.nextTag();//  w  ww.  j  a v  a  2 s .  c o m
    try {
        reader.require(XMLStreamConstants.START_ELEMENT, null, "first_name");
    } catch (XMLStreamException e) {
        System.out.println("Assertion failed. " + e.getMessage() + " at " + reader.getLocation().getLineNumber()
                + ":" + reader.getLocation().getColumnNumber());
    }
    System.out.println(reader.getElementText());

}

From source file:BufferConverter.java

public static void main(String[] arguments) {
    try {/*w w  w . j a  v a2  s  . c o  m*/
        String data = "friends.dat";
        FileInputStream inData = new FileInputStream(data);
        FileChannel inChannel = inData.getChannel();
        long inSize = inChannel.size();
        ByteBuffer source = ByteBuffer.allocate((int) inSize);
        inChannel.read(source, 0);
        source.position(0);
        for (int i = 0; source.remaining() > 0; i++)
            System.out.print(source.get() + " ");

        source.position(0);
        Charset ascii = Charset.forName("US-ASCII");
        CharsetDecoder toAscii = ascii.newDecoder();
        CharBuffer destination = toAscii.decode(source);
        destination.position(0);
        System.out.println("\n\nNew character data:");
        for (int i = 0; destination.remaining() > 0; i++)
            System.out.print(destination.get());
    } catch (Exception ioe) {
        System.out.println(ioe.getMessage());
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    JAXBContext context = JAXBContext.newInstance(User.class);

    XMLInputFactory xif = XMLInputFactory.newInstance();
    FileInputStream fis = new FileInputStream("input.xml");
    XMLStreamReader xsr = xif.createXMLStreamReader(fis);
    xsr.nextTag();/*from w w w  .ja va2 s . c o  m*/
    String noNamespaceSchemaLocation = xsr.getAttributeValue(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI,
            "noNamespaceSchemaLocation");
    System.out.println(noNamespaceSchemaLocation);

    Unmarshaller um = context.createUnmarshaller();
    User response = (User) um.unmarshal(xsr);
}

From source file:FileIOApp.java

public static void main(String args[]) throws IOException {
    FileOutputStream outStream = new FileOutputStream("test.txt");
    String s = "This is a test.";
    for (int i = 0; i < s.length(); ++i)
        outStream.write(s.charAt(i));/*from  w w  w . j  a v  a2  s . c  om*/
    outStream.close();
    FileInputStream inStream = new FileInputStream("test.txt");
    int inBytes = inStream.available();
    System.out.println("inStream has " + inBytes + " available bytes");
    byte inBuf[] = new byte[inBytes];
    int bytesRead = inStream.read(inBuf, 0, inBytes);
    System.out.println(bytesRead + " bytes were read");
    System.out.println("They are: " + new String(inBuf));
    inStream.close();
    File f = new File("test.txt");
    f.delete();
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder docBuilder = dbf.newDocumentBuilder();
    Document doc = docBuilder.parse(new FileInputStream("data.xml"));
    Element root = doc.getDocumentElement();
    org.w3c.dom.NodeList nodeList = root.getElementsByTagName("key");
    for (int i = 0; i < nodeList.getLength(); i++) {
        System.out.print(((Node) nodeList.item(i)).getAttributes().getNamedItem("keyname"));
        System.out.println("\tvalue: " + ((Node) nodeList.item(i)).getTextContent());
    }//from   w ww  . j  av  a2s .  c  o m

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    FileChannel fc = new FileOutputStream("data2.txt").getChannel();
    ByteBuffer buff = ByteBuffer.allocate(24); // More than needed
    buff.asCharBuffer().put("Some text");
    fc.write(buff);//from w  w w.java  2  s . c  om
    fc.close();

    fc = new FileInputStream("data2.txt").getChannel();
    buff.clear();
    fc.read(buff);
    buff.flip();
    System.out.println(buff.asCharBuffer());

}

From source file:Main.java

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

    prop.put("Chapter Count", "200");
    prop.put("Tutorial Count", "15");

    // create a output and input as a xml file
    FileOutputStream fos = new FileOutputStream("properties.xml");
    FileInputStream fis = new FileInputStream("properties.xml");

    // store the properties in the specific xml
    prop.storeToXML(fos, null);//  w  ww .  j av a2s . c  o  m

    // load from the xml that we saved earlier
    prop.loadFromXML(fis);

    // print the properties list
    prop.list(System.out);

}