Example usage for java.io File File

Introduction

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

Prototype

public File(URI uri)

Source Link

Document

Creates a new File instance by converting the given file: URI into an abstract pathname.

Usage

From source file:Main.java

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

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setValidating(true);/*  w  w w . j  av a  2s .c  o m*/

    factory.setExpandEntityReferences(false);

    Document doc = factory.newDocumentBuilder().parse(new File("filename"));
    Comment comment = doc.createComment("invalid -- comment");
    boolean validComment = comment.getNodeValue().indexOf("--") < 0;
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setValidating(true);/*from w ww  . ja  va  2  s .  c om*/
    factory.setExpandEntityReferences(false);
    Document doc = factory.newDocumentBuilder().parse(new File("filename"));
    Element element = doc.getElementById("key1");

    element.setAttribute("newAttrName", "attrValue");
    element.setAttribute("newAttrName", "<>&\"'");
    element.removeAttribute("value");
    boolean has = element.hasAttribute("value"); // true
    String attrValue = element.getAttribute("value"); // mydefault
}

From source file:MainClass.java

public static void main(String[] args) {
    long[] primes = new long[] { 1, 2, 3, 5, 7 };
    File aFile = new File("C:/test/primes.bin");
    FileOutputStream outputFile = null;
    try {//from  ww  w. j a  v  a  2  s.c om
        outputFile = new FileOutputStream(aFile);
    } catch (FileNotFoundException e) {
        e.printStackTrace(System.err);
    }
    FileChannel file = outputFile.getChannel();
    final int BUFFERSIZE = 100;
    ByteBuffer buf = ByteBuffer.allocate(BUFFERSIZE);
    LongBuffer longBuf = buf.asLongBuffer();
    int primesWritten = 0;
    while (primesWritten < primes.length) {
        longBuf.put(primes, primesWritten, min(longBuf.capacity(), primes.length - primesWritten));
        buf.limit(8 * longBuf.position());
        try {
            file.write(buf);
            primesWritten += longBuf.position();
        } catch (IOException e) {
            e.printStackTrace(System.err);
        }
        longBuf.clear();
        buf.clear();
    }
    try {
        System.out.println("File written is " + file.size() + "bytes.");
        outputFile.close();
    } catch (IOException e) {
        e.printStackTrace(System.err);
    }
}

From source file:Main.java

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

    props = new java.util.Properties();
    String path = new Main().getClass().getProtectionDomain().getCodeSource().getLocation().toString()
            .substring(6);/*from  w  w w  .  ja  v a 2  s  . co  m*/
    FileInputStream fis = new FileInputStream(new File(path + "\\myprops.props"));
    props.load(fis);
    System.out.println(props);

}

From source file:Main.java

public static void main(String args[]) throws IOException, ClassNotFoundException {
    File file = new File("test.txt");
    FileOutputStream outFile = new FileOutputStream(file);
    ObjectOutputStream outStream = new ObjectOutputStream(outFile);
    TestClass1 t1 = new TestClass1(true, 9, 'A', 0.0001, "java");
    TestClass2 t2 = new TestClass2();
    String t3 = "This is a test.";
    Date t4 = new Date();
    outStream.writeObject(t1);/*  w  w w .j  a va 2s .c o m*/
    outStream.writeObject(t2);
    outStream.writeObject(t3);
    outStream.writeObject(t4);
    outStream.close();
    outFile.close();
    FileInputStream inFile = new FileInputStream(file);
    ObjectInputStream inStream = new ObjectInputStream(inFile);
    System.out.println(inStream.readObject());
    System.out.println(inStream.readObject());
    System.out.println(inStream.readObject());
    System.out.println(inStream.readObject());
    inStream.close();
    inFile.close();
    file.delete();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new File("Test.xml"));
    XPath xPath = XPathFactory.newInstance().newXPath();
    XPathExpression exp = xPath.compile("//data");
    NodeList nl = (NodeList) exp.evaluate(doc, XPathConstants.NODESET);
    System.out.println("Found " + nl.getLength() + " results");
}

From source file:MainClass.java

public static void main(String[] args) {
    String phrase = new String("text \n");
    String dirname = "C:/test";
    String filename = "charData.txt";
    File dir = new File(dirname);
    File aFile = new File(dir, filename);
    FileOutputStream outputFile = null;
    try {/*w w w .j av  a2  s .  c o  m*/
        outputFile = new FileOutputStream(aFile, true);
        System.out.println("File stream created successfully.");
    } catch (FileNotFoundException e) {
        e.printStackTrace(System.err);
    }
    FileChannel outChannel = outputFile.getChannel();
    ByteBuffer buf = ByteBuffer.allocate(1024);
    System.out.println("New buffer:           position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());
    for (char ch : phrase.toCharArray()) {
        buf.putChar(ch);
    }
    System.out.println("Buffer after loading: position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());
    buf.flip();
    System.out.println("Buffer after flip:   position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());
    try {
        outChannel.write(buf);
        outputFile.close();
        System.out.println("Buffer contents written to file.");
    } catch (IOException e) {
        e.printStackTrace(System.err);
    }
}

From source file:UnmarshallingDemo.java

public static void main(String[] args) {
    try {// www. ja v a  2  s  .com
        JAXBContext jc = JAXBContext.newInstance("generated");

        Unmarshaller u = jc.createUnmarshaller();

        File f = new File("item.xml");
        JAXBElement element = (JAXBElement) u.unmarshal(f);

        Item item = (Item) element.getValue();
        System.out.println(item.getCode());
        System.out.println(item.getName());
        System.out.println(item.getPrice());
    } catch (JAXBException e) {
        e.printStackTrace();
    }
}

From source file:de.tum.i13.ConvertCsvToProtobuf.java

public static void main(String args[]) {
    try {/*from ww  w. j  a va2 s. c o  m*/
        LineIterator it = FileUtils.lineIterator(new File("/Users/manit/Projects/sdcbenchmark/Dataset/debscsv"),
                "UTF-8");
        FileOutputStream out = new FileOutputStream("/Users/manit/Projects/sdcbenchmark/Dataset/debsprotobuf",
                true);

        while (it.hasNext()) {

            String csvLine = (String) it.next();
            byte[] csvLineBytes = csvLine.getBytes();
            String line = new String(csvLineBytes, StandardCharsets.UTF_8);
            Debs2015Protos.Taxitrip.Builder builder = Debs2015Protos.Taxitrip.newBuilder();
            String[] splitted = line.split(",");

            builder.setMedallion(splitted[0]);
            builder.setHackLicense(splitted[1]);
            builder.setPickupDatetime(splitted[2]);
            builder.setDropoffDatetime(splitted[3]);
            builder.setTripTimeInSecs(Integer.parseInt(splitted[4]));
            builder.setTripDistance(Float.parseFloat(splitted[5]));
            builder.setPickupLongitude(Float.parseFloat(splitted[6]));
            builder.setPickupLatitude(Float.parseFloat(splitted[7]));
            builder.setDropoffLongitude(Float.parseFloat(splitted[8]));
            builder.setDropoffLatitude(Float.parseFloat(splitted[9]));
            builder.setPaymentType(splitted[10]);
            builder.setFareAmount(Float.parseFloat(splitted[11]));
            builder.setSurcharge(Float.parseFloat(splitted[12]));
            builder.setMtaTax(Float.parseFloat(splitted[13]));
            builder.setTipAmount(Float.parseFloat(splitted[14]));
            builder.setTollsAmount(Float.parseFloat(splitted[15]));
            builder.setTotalAmount(Float.parseFloat(splitted[16]));

            builder.build().writeDelimitedTo(out);
        }
        out.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setValidating(true);//from w  w  w.j a v a2s.c o m
    factory.setExpandEntityReferences(false);
    Document doc = factory.newDocumentBuilder().parse(new File("filename"));

    Element element = doc.getElementById("key1");
    boolean has = element.hasAttribute("value");
    String attrValue = element.getAttribute("value");
    element.setAttribute("value", "newValue1");

    element = doc.getElementById("key2");
    has = element.hasAttribute("value");
    attrValue = element.getAttribute("value");

    element.setAttribute("value", "a<\"'&>z");

}