Example usage for java.io InputStream read

Introduction

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

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads some number of bytes from the input stream and stores them into the buffer array b.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection(url, username, password);

    String sql = "SELECT name, description, image FROM pictures ";
    PreparedStatement stmt = conn.prepareStatement(sql);
    ResultSet resultSet = stmt.executeQuery();
    while (resultSet.next()) {
        String name = resultSet.getString(1);
        String description = resultSet.getString(2);
        File image = new File("D:\\java.gif");
        FileOutputStream fos = new FileOutputStream(image);

        byte[] buffer = new byte[1];
        InputStream is = resultSet.getBinaryStream(3);
        while (is.read(buffer) > 0) {
            fos.write(buffer);/*from w w w .j ava  2s .c om*/
        }
        fos.close();
    }
    conn.close();
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Socket s = new Socket(args[0], 13);
    InputStream is = s.getInputStream();
    while (true) {
        byte b[] = new byte[100];
        int i = is.read(b);
        if (i == -1)
            break;
        System.out.print(new String(b, 0, i));
    }//from  www  . j  a va2s  .c  o m
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");

    Statement stmt = conn.createStatement();

    createBlobClobTables(stmt);//from   w  ww.  java 2 s  .  c  o  m

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO BlobClob VALUES(40,?,?)");

    File file = new File("blob.txt");
    FileInputStream fis = new FileInputStream(file);
    pstmt.setBinaryStream(1, fis, (int) file.length());

    file = new File("clob.txt");
    fis = new FileInputStream(file);
    pstmt.setAsciiStream(2, fis, (int) file.length());
    fis.close();

    pstmt.execute();

    ResultSet rs = stmt.executeQuery("SELECT * FROM BlobClob WHERE id = 40");
    rs.next();

    java.sql.Blob blob = rs.getBlob(2);
    java.sql.Clob clob = rs.getClob(3);

    byte blobVal[] = new byte[(int) blob.length()];
    InputStream blobIs = blob.getBinaryStream();
    blobIs.read(blobVal);
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bos.write(blobVal);
    blobIs.close();

    char clobVal[] = new char[(int) clob.length()];
    Reader r = clob.getCharacterStream();
    r.read(clobVal);
    StringWriter sw = new StringWriter();
    sw.write(clobVal);

    r.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");

    Statement stmt = conn.createStatement();

    createBlobClobTables(stmt);//  ww  w  .  j  a v  a  2  s . co  m

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO BlobClob VALUES(40,?,?)");

    File file = new File("blob.txt");
    FileInputStream fis = new FileInputStream(file);
    pstmt.setBinaryStream(1, fis, (int) file.length());

    file = new File("clob.txt");
    fis = new FileInputStream(file);
    pstmt.setAsciiStream(2, fis, (int) file.length());
    fis.close();

    pstmt.execute();

    ResultSet rs = stmt.executeQuery("SELECT * FROM BlobClob WHERE id = 40");
    rs.next();

    java.sql.Blob blob = rs.getBlob(2);
    java.sql.Clob clob = rs.getClob("myClobColumn");

    byte blobVal[] = new byte[(int) blob.length()];
    InputStream blobIs = blob.getBinaryStream();
    blobIs.read(blobVal);
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bos.write(blobVal);
    blobIs.close();

    char clobVal[] = new char[(int) clob.length()];
    Reader r = clob.getCharacterStream();
    r.read(clobVal);
    StringWriter sw = new StringWriter();
    sw.write(clobVal);

    r.close();
    conn.close();
}

From source file:Main.java

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

    byte[] buffer = new byte[5];

    // new input stream created
    InputStream is = new FileInputStream("C://test.txt");

    System.out.println("Characters printed:");

    // read stream data into buffer
    is.read(buffer);

    // for each byte in the buffer
    for (byte b : buffer) {
        // convert byte to character
        char c = (char) b;

        // prints character
        System.out.print(c);/*  w  ww  .j  av a 2 s . c o m*/
    }
    is.close();
}

From source file:GetURL.java

public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.google.com");
    InputStream urlstream = url.openStream();
    byte[] buffer = new byte[0];
    byte[] chunk = new byte[4096];
    int count;/*  ww w  . j ava  2s .  c o  m*/

    while ((count = urlstream.read(chunk)) >= 0) {
        byte[] t = new byte[buffer.length + count];
        System.arraycopy(buffer, 0, t, 0, buffer.length);
        System.arraycopy(chunk, 0, t, buffer.length, count);
        buffer = t;
    }

    String filename = (url.getFile()).replace('/', File.separatorChar);
    File f1 = new File(filename);
    filename = f1.getName();
    FileOutputStream f = null;
    f = new FileOutputStream(filename);
    f.write(buffer);
    f.close();
}

From source file:MainClass.java

public static void main(String args[]) {
    try {/*from w  w w. j a v  a 2  s .c  o m*/

        URL url = new URL("http://www.java2s.com");

        // Obtain output stream
        InputStream is = url.openStream();

        // Read and display data from url
        byte buffer[] = new byte[1024];
        int i;
        while ((i = is.read(buffer)) != -1) {
            System.out.write(buffer, 0, i);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    URL u = new URL("http://www.google.com");
    InputStream in = u.openStream();
    MessageDigest sha = MessageDigest.getInstance("SHA");
    byte[] data = new byte[1024];
    int bytesRead = -1;
    while ((bytesRead = in.read(data)) >= 0) {
        sha.update(data, 0, bytesRead);//from  w  ww.  j  a  v a 2s.c  o m
    }
    byte[] result = sha.digest();
    System.out.println(Arrays.toString(result));
    System.out.println(new BigInteger(result));
}

From source file:Main.java

public static void main(String[] arg) throws Throwable {
    File f = new File(arg[0]);
    InputStream in = new FileInputStream(f);

    byte[] buff = new byte[8000];

    int bytesRead = 0;

    ByteArrayOutputStream bao = new ByteArrayOutputStream();

    while ((bytesRead = in.read(buff)) != -1) {
        bao.write(buff, 0, bytesRead);//from w ww . j  ava2 s  .  c  om
    }
    in.close();

    byte[] data = bao.toByteArray();

    ByteArrayInputStream bin = new ByteArrayInputStream(data);
    System.out.println(bin.available());
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    URL url = new URL("http://www.java2s.com/style/download.png");

    InputStream inputStream = url.openStream();
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    byte[] buffer = new byte[1024];

    int n = 0;//from w w w.  ja  v  a 2  s .  co m
    while (-1 != (n = inputStream.read(buffer))) {
        output.write(buffer, 0, n);
    }
    inputStream.close();

    byte[] data = output.toByteArray();

    OutputStream out = new FileOutputStream("data.png");
    out.write(data);
    out.close();

    for (byte b : data) {
        System.out.printf("0x%x ", b);
    }
}