Example usage for java.io FileInputStream FileInputStream

List of usage examples for java.io FileInputStream FileInputStream

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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 {

    ObjectOutputStream out = new ObjectOutputStream(
            new BufferedOutputStream(new FileOutputStream("file.data")));
    out.write("java2s.com".getBytes(), 1, 2);
    out.close();/*from  w w w .  jav  a  2s. c om*/

    ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(new FileInputStream("file.data")));

    byte[] byteArray = new byte[10];
    in.read(byteArray);
    System.out.println(Arrays.toString(byteArray));
    in.close();
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    double[] dbuf = { 12.34, 34.45, 67.78, 88.88, 66.66, 77.33 };

    FileOutputStream fos = new FileOutputStream("c:\\test.txt");
    DataOutputStream dos = new DataOutputStream(fos);

    for (double d : dbuf) {
        dos.writeDouble(d);//from  w ww. j a va  2 s  . c o  m
    }
    dos.flush();

    InputStream is = new FileInputStream("c:\\test.txt");
    DataInputStream dis = new DataInputStream(is);

    while (dis.available() > 0) {
        double c = dis.readDouble();
        System.out.print(c);
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection con = DriverManager.getConnection("jdbc:h2:mem:");
    Statement s = con.createStatement();
    s.execute("CREATE TABLE Table1 (Column1 CLOB)");

    InputStream is = new FileInputStream("data.txt");
    Reader rdr = new InputStreamReader(is, StandardCharsets.ISO_8859_1);
    PreparedStatement ps = con.prepareStatement("INSERT INTO Table1 (Column1) VALUES (?)");
    ps.setCharacterStream(1, rdr);/*from  ww  w .  j a va2  s .c  o  m*/
    ps.executeUpdate();

    ResultSet rs = s.executeQuery("SELECT Column1 FROM Table1");
    int rowNumber = 0;
    while (rs.next()) {
        String str = rs.getString("Column1");
        System.out.println(String.format("Row %d: CLOB is %d character(s) long.", ++rowNumber, str.length()));
    }
    rs.close();
    con.close();
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    DataOutputStream out2 = new DataOutputStream(new BufferedOutputStream(new FileOutputStream("Data.txt")));
    out2.writeDouble(3.14159);//from  w  w w. ja  v a  2  s.co  m
    out2.writeUTF("Square root of 2");
    out2.close();

    DataInputStream in5 = new DataInputStream(new BufferedInputStream(new FileInputStream("Data.txt")));

    System.out.println(in5.readDouble());
    System.out.println(in5.readUTF());
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (Id int, b CLOB);");

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO survey VALUES(1,?)");

    File file = new File("c:/Java_Dev/data.txt");
    FileInputStream fis = new FileInputStream(file);
    pstmt.setAsciiStream(1, fis, (int) file.length());
    pstmt.execute();/* w w  w. jav  a2s .  com*/

    fis.close();
    st.close();
    conn.close();
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    String cacert = "mytest.cer";
    String lfcert = "lf_signed.cer";
    String lfstore = "lfkeystore";
    char[] lfstorepass = "wshr.ut".toCharArray();
    char[] lfkeypass = "wshr.ut".toCharArray();
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    FileInputStream in1 = new FileInputStream(cacert);
    java.security.cert.Certificate cac = cf.generateCertificate(in1);
    in1.close();// ww w.ja va 2  s .  co  m
    FileInputStream in2 = new FileInputStream(lfcert);
    java.security.cert.Certificate lfc = cf.generateCertificate(in2);
    in2.close();
    java.security.cert.Certificate[] cchain = { lfc, cac };
    FileInputStream in3 = new FileInputStream(lfstore);
    KeyStore ks = KeyStore.getInstance("JKS");
    ks.load(in3, lfstorepass);
    PrivateKey prk = (PrivateKey) ks.getKey("lf", lfkeypass);
    ks.setKeyEntry("lf_signed", prk, lfstorepass, cchain);
    FileOutputStream out4 = new FileOutputStream("lfnewstore");
    ks.store(out4, "newpass".toCharArray());
    out4.close();
}

From source file:WordCount.java

public static void main(String args[]) throws Exception {
    String filename = "WordCount.java";

    // Map File from filename to byte buffer
    FileInputStream input = new FileInputStream(filename);
    FileChannel channel = input.getChannel();
    int fileLength = (int) channel.size();
    MappedByteBuffer buffer = channel.map(FileChannel.MapMode.READ_ONLY, 0, fileLength);

    // Convert to character buffer
    Charset charset = Charset.forName("ISO-8859-1");
    CharsetDecoder decoder = charset.newDecoder();
    CharBuffer charBuffer = decoder.decode(buffer);

    // Create line pattern
    Pattern linePattern = Pattern.compile(".*$", Pattern.MULTILINE);

    // Create word pattern
    Pattern wordBreakPattern = Pattern.compile("[\\p{Punct}\\s}]");

    // Match line pattern to buffer
    Matcher lineMatcher = linePattern.matcher(charBuffer);

    Map map = new TreeMap();
    Integer ONE = new Integer(1);

    // For each line
    while (lineMatcher.find()) {
        // Get line
        CharSequence line = lineMatcher.group();

        // Get array of words on line
        String words[] = wordBreakPattern.split(line);

        // For each word
        for (int i = 0, n = words.length; i < n; i++) {
            if (words[i].length() > 0) {
                Integer frequency = (Integer) map.get(words[i]);
                if (frequency == null) {
                    frequency = ONE;//  w w  w .j  a  v a 2s . com
                } else {
                    int value = frequency.intValue();
                    frequency = new Integer(value + 1);
                }
                map.put(words[i], frequency);
            }
        }
    }
    System.out.println(map);
}

From source file:SVGDOC2JPEG.java

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

    JPEGTranscoder transcoder = new JPEGTranscoder();

    transcoder.addTranscodingHint(JPEGTranscoder.KEY_XML_PARSER_CLASSNAME,
            "org.apache.crimson.parser.XMLReaderImpl");
    transcoder.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, new Float(1.0));

    TranscoderInput input = new TranscoderInput(new FileInputStream("rectangles.svg"));
    OutputStream ostream = new FileOutputStream("out.jpg");
    TranscoderOutput output = new TranscoderOutput(ostream);

    transcoder.transcode(input, output);
    ostream.close();/*  w  w w .j av a2 s.c  o m*/
    System.exit(0);
}

From source file:Main.java

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

    byte b = 127;

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    // write something in the file
    oout.writeByte(b);/*from   ww  w.j a va 2  s . co m*/
    oout.flush();
    oout.close();
    // create an ObjectInputStream for the file we created before
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    // read and print the unshared object
    System.out.println(ois.readUnsignedByte());
    ois.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String url = "jdbc:mysql://localhost:3306/";
    String dbName = "javatutorial";
    String userName = "root";
    String password = "root";

    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection(url + dbName, userName, password);
    File imgfile = new File("images.jpg");
    FileInputStream fin = new FileInputStream(imgfile);
    PreparedStatement pre = con.prepareStatement("insert into Image values(?,?,?)");
    pre.setInt(1, 5);/*from  ww  w.j  a v  a  2 s. c o  m*/
    pre.setString(2, "A");
    pre.setBinaryStream(3, fin, (int) imgfile.length());
    pre.executeUpdate();
    pre.close();
    con.close();
}