Example usage for java.io File length

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:arena.utils.FileUtils.java

public static void copyFile(File from, File to, boolean appendNotReplace) throws IOException {
    InputStream in = null;/*  w  w w  . j a v  a 2 s  .  c  o m*/
    OutputStream out = null;
    try {
        if (!appendNotReplace && to.exists() && to.length() > 0) {
            to.delete();
        }
        to.getParentFile().mkdirs();

        in = new FileInputStream(from);
        out = new FileOutputStream(to, true);
        byte buffer[] = new byte[4096];
        int read = 0;
        while ((read = in.read(buffer)) != -1) {
            out.write(buffer, 0, read);
        }
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (IOException err) {
            }
        }
        if (out != null) {
            try {
                out.close();
            } catch (IOException err) {
            }
        }
    }
}

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From source file:ch.admin.suis.msghandler.util.FileUtils.java

/**
 * Mantis: 0006311. Checks for free diskspace before copy or move a file!
 *
 * @param src  The file to copy//from   ww  w.j  a va2  s  .c  om
 * @param dest The destination
 * @throws IOException Ouch, IO problem here. Probably not enough disk space
 */
private static void checkForFreeDiskSpace(File src, File dest) throws IOException {
    long requiredBytes = src.length();
    long freeSpaceBytes = getFreeDiskSpace(dest);

    if (requiredBytes > freeSpaceBytes) {
        String msg = "Not enough free disk space. Required Bytes: " + requiredBytes + ", available Bytes: "
                + freeSpaceBytes;
        LOG.error("Unable to copy file: src: " + src.getAbsolutePath() + " dest: " + dest.getAbsolutePath()
                + ". Message: " + msg);
        throw new IOException(msg);
    }
}

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From source file:$.FileUtils.java

/**
     * Read file of URL into file.//from w w w . j a  v a 2s .  co m
     * @param url URL where the input file is located
     * @return Result file
     */
    public static File urlToFile(URL url, String ext) throws IOException {
        File fOut = null;

        fOut = getTmpFile("fromurl", "." + ext);

        URLConnection uc = url.openConnection();
        logger.info("ContentType: " + uc.getContentType());
        InputStream in = uc.getInputStream();
        org.apache.commons.io.FileUtils.copyInputStreamToFile(in, fOut);
        logger.info("File of length " + fOut.length() + " created from URL " + url.toString());

        in.close();

        return fOut;
    }

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From source file:eu.scape_project.archiventory.utils.IOUtils.java

public static byte[] getBytesFromFile(String filePath) throws IOException {
    File file = new File(filePath);
    if (!file.exists()) {
        throw new FileNotFoundException("File not available");
    }//from   w ww  . java 2s  .  c o m
    InputStream is = null;
    byte[] bytes = null;
    try {
        is = new FileInputStream(file);
        long length = file.length();
        if (length > Integer.MAX_VALUE) {
            throw new IllegalArgumentException("File object is too large");
        }
        bytes = new byte[(int) length];
        int offset = 0;
        int numRead = 0;
        while (offset < bytes.length && (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {
            offset += numRead;
        }
    } catch (IOException ex) {
        logger.error("I/O Error", ex);
    } finally {
        if (is != null) {
            try {
                is.close();
            } catch (IOException _) {
                // ignore
            }
        }
    }
    return bytes;

}

---

From source file:DiskIO.java

public static String readFileInString(File fromFile) throws IOException {
    StringBuffer strbuf = new StringBuffer((int) fromFile.length());

    BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(fromFile), "ISO-8859-1"));
    String str;/*w w  w .  j  a v a  2  s  .  c  o  m*/
    strbuf = new StringBuffer((int) fromFile.length());

    while ((str = in.readLine()) != null) {
        strbuf.append(str + "\n");
    }

    in.close();

    return strbuf.toString();

    /*
     * int lineNumber = 0; byte[] buffer = new byte[1024]; int read;
     * StringBuffer out = new StringBuffer((int)fromFile.length());
     * FileInputStream in = new FileInputStream( fromFile );
     * 
     * read = in.read(buffer); while ( read == 1024 ) { out.append(new
     * String(buffer,"ISO-8859-1")); read = in.read(buffer); }
     * 
     * out.append(new String(buffer,0,read,"ISO-8859-1")); in.close();
     * 
     * return out.toString();
     */
}

---

From source file:Main.java

public static double getDirSize(File file) {
    //check if file exist or not
    if (file.exists()) {
        // recursion to calculate total image size
        if (file.isDirectory()) {
            File[] children = file.listFiles();
            double size = 0;
            for (File f : children)
                size += getDirSize(f);/*from w w  w . j a  v  a 2 s  .c o  m*/
            return size;
        } else {//if it is file, return the size, "M" unit
            double size = (double) file.length() / 1024 / 1024;
            return size;
        }
    } else {
        return 0.0;
    }
}

---

From source file:com.hs.mail.imap.message.MailMessage.java

public static MailMessage createMailMessage(File file, Date internalDate, Flags flags) throws IOException {
    MailMessage message = new MailMessage(file);
    FileInputStream fis = null;/*  w w  w  . ja v a 2  s  .c om*/
    try {
        fis = new FileInputStream(file);
        MessageHeader header = new MessageHeader(fis);
        message.setPhysMessageID(0);
        message.setHeader(header);
        message.setSize(file.length());
        message.setInternalDate(internalDate);
        message.setFlags(flags);
        return message;
    } finally {
        IOUtils.closeQuietly(fis);
    }
}

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From source file:com.netsteadfast.greenstep.util.SystemFtpClientUtils.java

private static void logWarnFileSize(File file) throws Exception {
    long bytes = file.length();
    if (bytes > 0 && (bytes / 1024) > MAX_SIZE_KB) {
        logger.warn("The file: " + file.getPath() + " is bigger then " + MAX_SIZE_KB
                + " kb size. please change SYS_FTP.TYPE type to " + SystemFtpClientModel.TRAN_GET);
    }//  www  .  ja v  a  2  s .c o  m
}

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From source file:com.barchart.udt.AppServer.java

private static void copyFile(final Socket sock) {
    log.info("Inside copy file ");
    final Runnable runner = new Runnable() {
        public void run() {
            InputStream is = null;
            OutputStream os = null;
            try {
                is = sock.getInputStream();
                final byte[] bytes = new byte[1024];
                final int bytesRead = is.read(bytes);
                final String str = new String(bytes);
                if (str.startsWith("GET ")) {
                    int nameIndex = 0;
                    for (final byte b : bytes) {
                        if (b == '\n') {
                            break;
                        }//  w  ww.ja  v  a 2 s .c  om
                        nameIndex++;
                    }
                    // Eat the \n.
                    nameIndex++;
                    final String fileName = new String(bytes, 4, nameIndex).trim();
                    log.info("File name: " + fileName);
                    final File f = new File(fileName);
                    final FileInputStream fis = new FileInputStream(f);
                    os = sock.getOutputStream();

                    copy(fis, os, f.length());
                    os.close();
                    return;
                }
                int nameIndex = 0;
                int lengthIndex = 0;
                boolean foundFirst = false;
                //boolean foundSecond = false;
                for (final byte b : bytes) {
                    if (!foundFirst) {
                        nameIndex++;
                    }
                    lengthIndex++;
                    if (b == '\n') {
                        if (foundFirst) {
                            break;
                        }
                        foundFirst = true;
                    }
                }
                if (nameIndex < 2) {
                    // First bytes was a LF?
                    sock.close();
                    return;
                }
                String dataString = new String(bytes);
                int fileLengthIndex = dataString.indexOf("\n", nameIndex + 1);
                final String fileName = new String(bytes, 0, nameIndex).trim();
                final String lengthString = dataString.substring(nameIndex, fileLengthIndex);
                log.info("lengthString " + lengthString);
                final long length = Long.parseLong(lengthString);
                final File file = new File(fileName);
                os = new FileOutputStream(file);
                final int len = bytesRead - lengthIndex;
                if (len > 0) {
                    os.write(bytes, lengthIndex, len);
                }
                start = System.currentTimeMillis();
                copy(is, os, length);
            } catch (final IOException e) {
                log.info("Exception reading file...", e);
            } finally {
                IOUtils.closeQuietly(is);
                IOUtils.closeQuietly(os);
                IOUtils.closeQuietly(sock);
            }
        }
    };
    log.info("Executing copy...");
    readPool.execute(runner);
}

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From source file:com.prowidesoftware.swift.utils.Lib.java

/**
 * Read the content of the given file into a string.
 *
 * @param file the file to be read/*from  w  w w. j a  v  a  2s .co  m*/
 * @param encoding encoding to use
 * @return the file contents or null if file is null or does not exist, or can't be read, or is not a file
 * @throws IOException if an error occurs during read
 */
public static String readFile(final File file, final String encoding) throws IOException {
    if (file == null || !file.exists() || !file.canRead() || !file.isFile()) {
        return null;
    }
    BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(file), encoding));
    final StringBuilder sb = new StringBuilder((int) file.length());
    try {
        int c = 0;
        while ((c = in.read()) != -1) {
            sb.append((char) c);
        }
    } finally {
        in.close();
    }
    return sb.toString();
}

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