Example usage for java.io File length

List of usage examples for java.io File length

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Introduction

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

Prototype

public long length()

Source Link

Document

Returns the length of the file denoted by this abstract pathname.

Usage

From source file:DemoPreparedStatementSetAsciiStream.java

public static void main(String[] args) {
    Connection conn = null;//w  w  w. jav a 2  s  . c  o  m
    PreparedStatement pstmt = null;
    String query = null;
    try {
        conn = getConnection();
        String fileName = "fileName.txt";
        File file = new File(fileName);
        int fileLength = (int) file.length();
        InputStream stream = (InputStream) new FileInputStream(file);

        query = "insert into  LONG_VARCHAR_TABLE(id, stream) values(?, ?)";
        pstmt = conn.prepareStatement(query);
        pstmt.setString(1, fileName);
        pstmt.setAsciiStream(2, stream, fileLength);

        int rowCount = pstmt.executeUpdate();
        System.out.println("rowCount=" + rowCount);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            pstmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = null;// w  w  w . j  av  a 2 s  .  c o m
    PreparedStatement pstmt = null;
    Statement stmt = null;
    ResultSet rs = null;
    Class.forName(JDBC_DRIVER);
    conn = DriverManager.getConnection(DB_URL, USER, PASS);
    stmt = conn.createStatement();
    createXMLTable(stmt);
    File f = new File("build.xml");
    long fileLength = f.length();
    FileInputStream fis = new FileInputStream(f);
    String SQL = "INSERT INTO XML_Data VALUES (?,?)";
    pstmt = conn.prepareStatement(SQL);
    pstmt.setInt(1, 100);
    pstmt.setAsciiStream(2, fis, (int) fileLength);
    pstmt.execute();
    fis.close();
    SQL = "SELECT Data FROM XML_Data WHERE id=100";
    rs = stmt.executeQuery(SQL);
    if (rs.next()) {
        InputStream xmlInputStream = rs.getAsciiStream(1);
        int c;
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        while ((c = xmlInputStream.read()) != -1)
            bos.write(c);
        System.out.println(bos.toString());
    }
    rs.close();
    stmt.close();
    pstmt.close();
    conn.close();
}

From source file:Main.java

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

    stmt.executeUpdate("create table survey (id int, name BINARY );");

    String sql = "INSERT INTO survey (name) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);

    // prepare text stream
    File file = new File("yourFileName.txt");
    int fileLength = (int) file.length();
    InputStream stream = (InputStream) new FileInputStream(file);

    pstmt.setString(1, "001");
    pstmt.setAsciiStream(2, stream, fileLength);

    // insert the data
    pstmt.executeUpdate();/*from   w  ww. j a  va 2s.  co  m*/

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.print(new String(rs.getBytes(2)));
    }

    rs.close();
    stmt.close();
    conn.close();
}

From source file:com.github.xbn.examples.io.non_xbn.SizeOrderAllFilesInDirXmpl.java

public static final void main(String[] ignored) {
    File fDir = (new File("R:\\jeffy\\programming\\sandbox\\xbnjava\\xbn\\"));
    Collection<File> cllf = FileUtils.listFiles(fDir, (new String[] { "java" }), true);

    //Add all file paths to a Map, keyed by size.
    //It's actually a map of lists-of-files, to
    //allow multiple files that happen to have the
    //same length.

    TreeMap<Long, List<File>> tmFilesBySize = new TreeMap<Long, List<File>>();
    Iterator<File> itrf = cllf.iterator();
    while (itrf.hasNext()) {
        File f = itrf.next();
        Long LLen = f.length();
        if (!tmFilesBySize.containsKey(LLen)) {
            ArrayList<File> alf = new ArrayList<File>();
            alf.add(f);/*from w w  w .j a va 2  s  . c  om*/
            tmFilesBySize.put(LLen, alf);
        } else {
            tmFilesBySize.get(LLen).add(f);
        }
    }

    //Iterate backwards by key through the map. For each
    //List<File>, iterate through the files, printing out
    //its size and path.

    ArrayList<Long> alSize = new ArrayList<Long>(tmFilesBySize.keySet());
    for (int i = alSize.size() - 1; i >= 0; i--) {
        itrf = tmFilesBySize.get(alSize.get(i)).iterator();
        while (itrf.hasNext()) {
            File f = itrf.next();
            System.out.println(f.length() + ": " + f.getPath());
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File f = new File("hello.txt");
    FileReader fr = new FileReader(f);

    char[] c = new char[(int) f.length()];
    char[] cnew = new char[(int) f.length()];
    StringBuffer sbuf = new StringBuffer();
    fr.read(c, 0, (int) f.length());

    int len = (int) f.length();

    for (int i = 0, j = len - 1; i < len; i++, j--) {
        cnew[i] = c[j];//from  w  w  w .  ja v  a  2  s . c o  m
        sbuf.append(cnew[i]);
    }

    System.out.println(sbuf.toString());
    fr.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File f = new File("Main.java");
    FileReader fr = new FileReader(f);

    char[] c = new char[(int) f.length()];
    char[] cnew = new char[(int) f.length()];
    StringBuffer sbuf = new StringBuffer();
    fr.read(c, 0, (int) f.length());

    int len = (int) f.length();

    for (int i = 0, j = len - 1; i < len; i++, j--) {
        cnew[i] = c[j];//from   w  ww .  j  a  va  2s  . com
        sbuf.append(cnew[i]);
    }

    System.out.println(sbuf.toString());
    fr.close();

}

From source file:Main.java

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

    stmt.executeUpdate("create table survey (id int, name BINARY );");

    String sql = "INSERT INTO survey (name) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);

    // prepare small binary stream
    File smallFile = new File("yourFileName.txt");
    int smallFileLength = (int) smallFile.length();
    InputStream smallStream = (InputStream) new FileInputStream(smallFile);

    pstmt.setBinaryStream(2, smallStream, smallFileLength);

    // insert the data
    pstmt.executeUpdate();// w  w w .j  av  a 2  s . c  o m

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.print(rs.getString(1));
    }

    rs.close();
    stmt.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("C:/String.txt");
    FileInputStream fin = new FileInputStream(file);

    byte fileContent[] = new byte[(int) file.length()];
    fin.read(fileContent);/*from w w  w . j  a va 2 s . c  om*/
    System.out.println(new String(fileContent));
}

From source file:DemoPreparedStatementSetBinaryStream.java

public static void main(String[] args) throws Exception {
    String smallFileName = "smallFileName.dat";
    String largeFileName = "largeFileName.dat";
    Connection conn = null;/*from  w  w  w .j a va2s  .  c om*/
    PreparedStatement pstmt = null;
    try {
        conn = getConnection();
        File smallFile = new File(smallFileName);
        int smallFileLength = (int) smallFile.length();
        InputStream smallStream = (InputStream) new FileInputStream(smallFile);
        File largeFile = new File(largeFileName);
        int largeFileLength = (int) largeFile.length();
        InputStream largeStream = (InputStream) new FileInputStream(largeFile);

        String query = "insert into binary_table(id, raw_column, long_raw_column) values(?, ?, ?)";

        conn.setAutoCommit(false);
        pstmt = conn.prepareStatement(query);
        pstmt.setString(1, "0001");
        pstmt.setBinaryStream(2, smallStream, smallFileLength);
        pstmt.setBinaryStream(3, largeStream, largeFileLength);

        // execute query, and return number of rows created
        int rowCount = pstmt.executeUpdate();
        System.out.println("rowCount=" + rowCount);
        conn.commit();
    } finally {
        pstmt.close();
        conn.close();
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    File file = new File("c:\\a.bat");
    InputStream is = new FileInputStream(file);

    long length = file.length();
    if (length > Integer.MAX_VALUE) {
        System.out.println("File is too large");
    }/*  ww  w.j  a  va 2 s  . c om*/

    byte[] bytes = new byte[(int) length];

    int offset = 0;
    int numRead = 0;
    while (numRead >= 0) {
        numRead = is.read(bytes, offset, bytes.length - offset);
        offset += numRead;
    }

    if (offset < bytes.length) {
        throw new IOException("Could not completely read file " + file.getName());
    }
    is.close();
    System.out.println(new String(bytes));
}