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 {
    Properties prop = new Properties();
    String s = "Chapter Count=200";
    String s2 = "Tutorial Count=15";

    // create a new input and output stream
    FileOutputStream fos = new FileOutputStream("properties.txt");
    FileInputStream fis = new FileInputStream("properties.txt");

    // write the first property in the output stream file
    fos.write(s.getBytes());//  w  w  w.  j a v a2s.  c  om

    // change the line between the two properties
    fos.write("\n".getBytes());

    // write next property
    fos.write(s2.getBytes());

    // load from input stream
    prop.load(fis);

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

}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    String storename = args[0];/*  www  .  ja va  2  s.co m*/
    char[] storepass = args[1].toCharArray();
    String alias = args[2];
    KeyStore ks = KeyStore.getInstance("JKS");
    ks.load(new FileInputStream(storename), storepass);
    java.security.cert.Certificate[] cchain = ks.getCertificateChain(alias);
    List mylist = new ArrayList();
    for (int i = 0; i < cchain.length; i++) {
        mylist.add(cchain[i]);
    }
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    CertPath cp = cf.generateCertPath(mylist);
    System.out.println(cp);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    //Read from an input stream
    InputStream is = new BufferedInputStream(new FileInputStream("source.gif"));
    Image image = ImageIO.read(is);

    JFrame frame = new JFrame();
    JLabel label = new JLabel(new ImageIcon(image));
    frame.getContentPane().add(label, BorderLayout.CENTER);
    frame.pack();/*from ww  w.j  av a 2  s .c om*/
    frame.setVisible(true);
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    FileChannel fc = new FileOutputStream("data2.txt").getChannel();
    fc.write(ByteBuffer.wrap("Some text".getBytes()));
    fc.close();//from  www  . j a v a2  s.  co m
    fc = new FileInputStream("data2.txt").getChannel();
    ByteBuffer buff = ByteBuffer.allocate(BSIZE);
    fc.read(buff);
    buff.flip();

    System.out.println(buff.asCharBuffer());
    // Decode using this system's default Charset:
    buff.rewind();
    String encoding = System.getProperty("file.encoding");
    System.out.println("Decoded using " + encoding + ": " + Charset.forName(encoding).decode(buff));
    // Or, we could encode with something that will print:
    fc = new FileOutputStream("data2.txt").getChannel();
    fc.write(ByteBuffer.wrap("Some text".getBytes("UTF-16BE")));
    fc.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String zipname = "d.zip";
    CheckedInputStream checksum = new CheckedInputStream(new FileInputStream(zipname), new Adler32());
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(checksum));
    ZipEntry entry;//from   w w w.  java 2 s  . c  o m

    while ((entry = zis.getNextEntry()) != null) {
        System.out.println("Unzipping: " + entry.getName());
        int size;
        byte[] buffer = new byte[2048];

        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(entry.getName()),
                buffer.length);
        while ((size = zis.read(buffer, 0, buffer.length)) != -1) {
            bos.write(buffer, 0, size);
        }
        bos.flush();
        bos.close();
    }

    zis.close();
    System.out.println("Checksum = " + checksum.getChecksum().getValue());
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    List mylist = new ArrayList();
    for (int i = 0; i < args.length; i++) {
        FileInputStream in = new FileInputStream(args[i]);
        Certificate c = cf.generateCertificate(in);
        mylist.add(c);/*from  w  w w. ja  v a2  s .c  o  m*/
    }
    CertPath cp = cf.generateCertPath(mylist);
    System.out.println(cp);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    XMLInputFactory xmlInputFactory = XMLInputFactory.newFactory();

    XMLEventReader xmlEventReader = xmlInputFactory.createXMLEventReader(new FileInputStream("input.xml"));
    InterestingElementFilter filter = new InterestingElementFilter();
    XMLEventReader interestingElementReader = xmlInputFactory.createFilteredReader(xmlEventReader, filter);

    while (interestingElementReader.hasNext()) {
        XMLEvent xmlEvent = interestingElementReader.peek();
        if (xmlEvent.isStartElement()) {
            System.out.println(xmlEvent.asStartElement().getName());
        }//from   w  w w. j a  v  a 2  s  . c o  m
        interestingElementReader.next();
    }
}

From source file:Main.java

public static void main(String[] args) {
    Path copy_from_2 = Paths.get("C:/tutorial/Java/JavaFX", "tutor.txt");
    Path copy_to_2 = Paths.get("C:/tutorial/Java/Swing", "tutor.txt");

    try (InputStream is = new FileInputStream(copy_from_2.toFile())) {

        Files.copy(is, copy_to_2, REPLACE_EXISTING);

    } catch (IOException e) {
        System.err.println(e);//from   w  w  w  .j  av  a2  s.  c o m
    }

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    String operatingSystem = (String) System.getProperty("os.name");
    String javaVersion = (String) System.getProperty("java.version");

    String javaDirectory = (String) System.getProperty("java.home");
    String userHomeDir = (String) System.getProperty("user.home");
    String myFile = (String) System.getProperty("myFile");
    FileInputStream fin = new FileInputStream(myFile);
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    byte[] b = { 65, 66, 67, 68, 69 };
    int i = 0;//from w  ww.ja  v a 2s  .c om
    FileOutputStream fos = new FileOutputStream("C://test.txt");

    fos.write(b);

    // flushes the content to the underlying stream
    fos.flush();

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

    // read till the end of the file
    while ((i = fis.read()) != -1) {
        // convert integer to character
        char c = (char) i;
        System.out.print(c);
    }
}