Example usage for java.io FileReader FileReader

Introduction

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

Prototype

public FileReader(FileDescriptor fd)

Source Link

Document

Creates a new FileReader , given the FileDescriptor to read, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:GetNameAsAttr.java

public static void main(String[] args) throws Exception {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xPath = factory.newXPath();

    Attr result = (Attr) xPath.evaluate("/schedule/@name", new InputSource(new FileReader("tds.xml")),
            XPathConstants.NODE);
    System.out.println(result.getValue());

    result.setValue("The Colbert Report");

}

From source file:InputOutputDemo.java

public static void main(String[] a) throws Exception {
    PrintWriter pwr = new PrintWriter(new FileWriter("java2s.txt"));
    pwr.print(4711);//w ww  . ja v a 2 s. c  o  m
    pwr.print(' ');
    pwr.print("Java Source and Support at www.java2s.com");
    pwr.close();

    StreamTokenizer stok = new StreamTokenizer(new FileReader("java2s.txt"));
    int tok = stok.nextToken();
    while (tok != StreamTokenizer.TT_EOF) {
        System.out.println(stok.sval);
        tok = stok.nextToken();
    }
}

From source file:ScanMixed.java

public static void main(String args[]) throws IOException {
    int i;//from   w  w  w. j a  v  a2  s  .  c  o m
    double d;
    boolean b;
    String str;

    FileWriter fout = new FileWriter("test.txt");
    fout.write("Testing Scanner 10 12.2 one true two false");
    fout.close();

    FileReader fin = new FileReader("Test.txt");

    Scanner src = new Scanner(fin);

    while (src.hasNext()) {
        if (src.hasNextInt()) {
            i = src.nextInt();
            System.out.println("int: " + i);
        } else if (src.hasNextDouble()) {
            d = src.nextDouble();
            System.out.println("double: " + d);
        } else if (src.hasNextBoolean()) {
            b = src.nextBoolean();
            System.out.println("boolean: " + b);
        } else {
            str = src.next();
            System.out.println("String: " + str);
        }
    }

    fin.close();
}

From source file:MainClass.java

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

    int count = 0;
    double sum = 0.0;

    FileWriter fout = new FileWriter("test.txt");
    fout.write("2 3.4 5 6 7.4 9.1 10.5 done");
    fout.close();/*from   www.  j a  va 2s . c  om*/

    FileReader fin = new FileReader("Test.txt");

    Scanner src = new Scanner(fin);

    while (src.hasNext()) {
        if (src.hasNextDouble()) {
            sum += src.nextDouble();
            count++;
        } else {
            String str = src.next();
            if (str.equals("done"))
                break;
            else {
                System.out.println("File format error.");
                return;
            }
        }
    }

    fin.close();
    System.out.println("Average is " + sum / count);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
    System.out.println(stdin.readLine());
    BufferedReader in = new BufferedReader(new FileReader("Main.java"));
    String s, s2 = new String();
    while ((s = in.readLine()) != null)
        s2 += s + "\n";
    in.close();/*ww w.  ja va2s  .  c  o m*/
    StringReader in1 = new StringReader(s2);
    int c;
    while ((c = in1.read()) != -1)
        System.out.print((char) c);
    BufferedReader in2 = new BufferedReader(new StringReader(s2));
    PrintWriter out1 = new PrintWriter(new BufferedWriter(new FileWriter("IODemo.out")));
    int lineCount = 1;
    while ((s = in2.readLine()) != null)
        out1.println(lineCount++ + ": " + s);
    out1.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xPath = factory.newXPath();

    NodeList shows = (NodeList) xPath.evaluate("/schedule/show", new InputSource(new FileReader("tds.xml")),
            XPathConstants.NODESET);
    for (int i = 0; i < shows.getLength(); i++) {
        Element show = (Element) shows.item(i);
        String guestName = xPath.evaluate("guest/name", show);
        System.out.println(guestName);
        System.out.println(show.getAttribute("weekday") + ", " + show.getAttribute("date"));
    }//from   w  w w.j  a v  a 2 s  .c  o m

}

From source file:GuestList.java

public static void main(String[] args) throws Exception {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xPath = factory.newXPath();

    NodeList shows = (NodeList) xPath.evaluate("/schedule/show", new InputSource(new FileReader("tds.xml")),
            XPathConstants.NODESET);
    for (int i = 0; i < shows.getLength(); i++) {
        Element show = (Element) shows.item(i);
        String guestName = xPath.evaluate("guest/name", show);
        String guestCredit = xPath.evaluate("guest/credit", show);

        System.out.println(show.getAttribute("weekday") + ", " + show.getAttribute("date") + " - " + guestName
                + " (" + guestCredit + ")");
    }/*ww  w  .ja v a2s . c  o  m*/

}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JTextField nameTextField = new JTextField();
    frame.add(nameTextField, BorderLayout.NORTH);

    FileReader reader = null;/*  w ww .j a va  2  s  . c om*/
    try {
        reader = new FileReader("fileName.txt");
        nameTextField.read(reader, "fileName.txt");
    } catch (IOException exception) {
        System.err.println("Load oops");
        exception.printStackTrace();
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException exception) {
                System.err.println("Error closing reader");
                exception.printStackTrace();
            }
        }
    }

    frame.setSize(250, 100);
    frame.setVisible(true);
}

From source file:Test.java

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

    final URL test = Test.class.getResource("/");
    System.out.println(test);//from   w  ww  .j a v  a 2s  .  c  o  m

    final URL url = Test.class.getResource("/resources/test.txt");
    System.out.println(url);

    if (url == null) {
        System.out.println("URL is null");
    } else {
        final File file = new File(url.toURI());
        final FileReader reader = new FileReader(file);
        final char[] buff = new char[20];
        final int l = reader.read(buff);
        System.out.println(new String(buff, 0, l));
        reader.close();
    }

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    XMLInputFactory xif = XMLInputFactory.newInstance();
    XMLStreamReader xsr = xif.createXMLStreamReader(new FileReader("input.xml"));
    xsr.nextTag(); // Advance to statements element

    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer();
    while (xsr.nextTag() == XMLStreamConstants.START_ELEMENT) {
        File file = new File("out/" + xsr.getAttributeValue(null, "account") + ".xml");
        t.transform(new StAXSource(xsr), new StreamResult(file));
    }//w  w w. ja va 2 s  . c o m
}