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[] a) {
    JFrame frame = new JFrame("JFileChooser Popup");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JFileChooser fileChooser = new JFileChooser(".");
    String f = fileChooser.getDescription(new File("."));

    frame.add(fileChooser, BorderLayout.CENTER);

    frame.pack();//  w  w w .  ja  va 2 s  .  c  o  m
    frame.setVisible(true);
}

From source file:CompressIt.java

public static void main(String[] args) {
    String filename = args[0];/*from  ww w.ja v a  2  s . c  o m*/
    try {
        File file = new File(filename);
        int length = (int) file.length();
        FileInputStream fis = new FileInputStream(file);
        BufferedInputStream bis = new BufferedInputStream(fis);
        ByteArrayOutputStream baos = new ByteArrayOutputStream(length);
        GZIPOutputStream gos = new GZIPOutputStream(baos);
        byte[] buffer = new byte[1024];
        int bytesRead;
        while ((bytesRead = bis.read(buffer)) != -1) {
            gos.write(buffer, 0, bytesRead);
        }
        bis.close();
        gos.close();
        System.out.println("Input Length: " + length);
        System.out.println("Output Length: " + baos.size());
    } catch (FileNotFoundException e) {
        System.err.println("Invalid Filename");
    } catch (IOException e) {
        System.err.println("I/O Exception");
    }
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = null;/* ww  w .  j a  v a2 s.c o m*/
    db = dbf.newDocumentBuilder();
    Document doc = db.parse(new File("games.xml"));
}

From source file:Main.java

public static void main(String[] args) {

    // create a new list of arguments for our process
    String[] list = { "notepad.exe", "test.txt" };

    // create the process builder
    ProcessBuilder pb = new ProcessBuilder(list);
    try {/*from   w  w  w . ja  v a2 s .  c  o  m*/

        pb = pb.redirectError(ProcessBuilder.Redirect.from(new File("c:/")));
        pb.start();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) {

    // create a new list of arguments for our process
    String[] list = { "notepad.exe", "test.txt" };

    // create the process builder
    ProcessBuilder pb = new ProcessBuilder(list);
    try {//  www  . j a v  a 2  s  . co  m

        pb = pb.redirectOutput(ProcessBuilder.Redirect.from(new File("c:/")));
        pb.start();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

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

    File xml = new File("yourFile.xml");

    Document doc = (Document) new SAXBuilder().build(xml);
    Element rootNode = doc.getRootElement();
    List list = rootNode.getChildren("staff");
    XMLOutputter xmlOut = new XMLOutputter();

    for (int i = 0; i < list.size(); i++) {

        Element node = (Element) list.get(i);
        if (node.getChildText("firstname").equals("sanjay"))
            node.getChild("salary").getChild("basic").setText("250000");
        xmlOut.setFormat(Format.getPrettyFormat());
        xmlOut.output(doc, new FileWriter("yourFile.xml"));
    }/*  ww w  . j  a va  2s .  com*/
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    File outputFile = new File("jsoutput.txt");
    System.out.println("Script output will be written to " + outputFile.getAbsolutePath());

    FileWriter writer = new FileWriter(outputFile);
    ScriptContext defaultCtx = engine.getContext();
    defaultCtx.setWriter(writer);/*from w  w w  .j  ava2 s . co m*/
    String script = "print('Hello custom output writer')";
    engine.eval(script);
    writer.close();

}

From source file:Main.java

  public static void main(String[] args) throws IOException {
  ServerSocket servsock = new ServerSocket(123456);
  File myFile = new File("s.pdf");
  while (true) {//from  w w  w .  j a v a  2 s  . c  om
    Socket sock = servsock.accept();
    byte[] mybytearray = new byte[(int) myFile.length()];
    BufferedInputStream bis = new BufferedInputStream(new FileInputStream(myFile));
    bis.read(mybytearray, 0, mybytearray.length);
    OutputStream os = sock.getOutputStream();
    os.write(mybytearray, 0, mybytearray.length);
    os.flush();
    sock.close();
  }
}

From source file:ExtensionFilter.java

public static void main(String args[]) {
    String dirname = "/java";
    File f1 = new File(dirname);
    FilenameFilter only = new ExtensionFilter("html");
    String s[] = f1.list(only);/*w  w w.j  a v  a2  s.c  o m*/
    for (int i = 0; i < s.length; i++) {
        System.out.println(s[i]);
    }
}

From source file:Main.java

public static void main(String[] args) {
    try {/*from w w  w .  ja v  a2s . c  o m*/
        char[] chars = new char[2];
        chars[0] = '\u4F60';
        chars[1] = '\u597D';
        String encoding = "GB18030";
        File textFile = new File("C:\\temp\\myFile.txt");
        PrintWriter writer = new PrintWriter(textFile, encoding);
        writer.write(chars);
        writer.close();

        // read back
        InputStreamReader reader = new InputStreamReader(new FileInputStream(textFile), encoding);
        char[] chars2 = new char[2];
        reader.read(chars2);
        System.out.print(chars2[0]);
        System.out.print(chars2[1]);
        reader.close();
    } catch (IOException e) {
        System.out.println(e.toString());
    }
}